Red Sox Place Marcelo Mayer On Injured List
The San Francisco Giants have added Marcelo Mayer and Bo Davidson to their roster. This move follows the placement of Jung Hoo Lee and Bryce Eldridge on the injured list. Eldridge entered concussion protocol after a hotel accident and will miss the final game of the series against the Dodgers. Mayer is approaching his first game with the Giants after recovering from multiple injuries and running bases for two consecutive days.
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- ✓ The San Francisco Giants added Marcelo Mayer and Bo Davidson to the roster.
- ✓ Jung Hoo Lee and Bryce Eldridge are on the injured list.
- ✓ Every member of the 2026 Opening Day starting lineup is traded or on the injured list.
What changed
The San Francisco Giants activated Marcelo Mayer and Bo Davidson while placing Bryce Eldridge and Jung Hoo Lee on the injured list.
Live updates
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SF Giants Call Up Marcelo Mayer as Eldridge and Lee Join Injured List
The San Francisco Giants have added Marcelo Mayer and Bo Davidson to their roster. This move follows the placement of Jung Hoo Lee and Bryce Eldridge on the injured list. Eldridge entered concussion protocol after a hotel accident and will miss the final game of the series against the Dodgers. Mayer is approaching his first game with the Giants after recovering from multiple injuries and running bases for two consecutive days.
Why it matters
The Giants face a roster crisis as every player from their 2026 Opening Day starting lineup has been traded or placed on the injured list. These transactions highlight the team's reliance on rookies and call-ups to fill critical gaps.
What is confirmed
- The San Francisco Giants added Marcelo Mayer and Bo Davidson to the roster.
- Jung Hoo Lee and Bryce Eldridge are on the injured list.
- Every member of the 2026 Opening Day starting lineup is traded or on the injured list.
Still unconfirmed
- Marcelo Mayer ran the bases for two straight days during his recovery from multiple injuries.
What to watch next
- The recovery timeline for Bryce Eldridge's concussion protocol.
confidence 90%Sources used for this update (3)
- sports.yahoo.com — Marcelo Mayer Nearing Giants Debut Following Injury Update
- sports.yahoo.com — BREAKING: Giants Place 6-Foot-7 Rookie in Concussion Protocol After Bizarre Hotel Accident
- www.mercurynews.com — SF Giants add Mayer, Davidson as Eldridge, Lee land on injured list
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Red Sox hold fifth seed in AL as postseason roster decisions loom
The Boston Red Sox are essentially locked into the fifth seed in the American League. Management is now evaluating bullpen configurations for the upcoming postseason. This follows a period of roster volatility where the team activated Willson Contreras and promoted Nate Eaton while managing injuries to Anthony Seigler. The team continues to refine its personnel as the regular season enters its final month.
Why it matters
Securing a postseason seed allows the team to shift focus from regular season standings to playoff optimization. Recent moves involving prospects like Franklin Arias and injured players show a team balancing long-term development with immediate playoff needs.
Still unconfirmed
- The Red Sox are basically locked into the fifth seed in the American League.
What to watch next
- Final postseason bullpen selections
- Official confirmation of the AL seedings
confidence 70%Sources used for this update (2)
- sports.yahoo.com — Breaking down the 2026 Red Sox postseason bullpen
- www.mlbtraderumors.com — Posey: Bullpen Will Be Offseason Focus
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Franklin Arias Records Home Run for Triple-A Worcester
Red Sox infield prospect Franklin Arias hit a home run and went 2-for-5 during a Sunday game for Triple-A Worcester. This performance follows a series of roster shifts for the Boston Red Sox, including the promotion of Nate Eaton and the activation of Willson Contreras. The team recently placed Anthony Seigler on the 10-day injured list as they manage personnel during the final month of the regular season.
Why it matters
The Red Sox are currently shuffling their roster to cover injuries to players like Ceddanne Rafaela. Strong performances from prospects in Triple-A often influence which players the franchise calls up to the major league roster.
What is confirmed
- Franklin Arias went 2-for-5 with a home run for Triple-A Worcester on Sunday.
What to watch next
- Potential promotion of Franklin Arias to the major league roster
- Update on the status of Anthony Seigler's 10-day injured list stint
confidence 100%Sources used for this update (2)
- www.nbcsports.com — Franklin Arias homers again at Triple-A
- wtop.com — Baltimore Orioles
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Red Sox Roster Shuffles As Injuries Mount
The Boston Red Sox promote Nate Eaton to replace injured centerfielder Ceddanne Rafaela instead of calling up Kristian Campbell from Triple-A Worcester. Concurrently, the team activates Willson Contreras following a quick recovery from a hamstring strain while placing Anthony Seigler on the 10-day injured list. These personnel shifts occur as the franchise navigates the final month of the regular season amid various roster adjustments, including earlier roster moves for Isiah Kiner-Falefa and Tyron Guerrero.
Why it matters
The Red Sox continue to manage a fluid roster during the stretch run of the regular season. These transactions follow a turbulent period for the franchise, which sat at 32-46 by June 24 before staging a recovery in the American League East standings.
What is confirmed
- The Boston Red Sox placed starting centerfielder Ceddanne Rafaela on the 10-day injured list.
- Nate Eaton was promoted to the Red Sox roster to replace Ceddanne Rafaela.
- Kristian Campbell remained at Triple-A Worcester rather than getting called up to replace Rafaela.
- The Boston Red Sox activated Willson Contreras from his hamstring strain.
- Anthony Seigler was placed on the 10-day injured list by the Red Sox.
Still unconfirmed
- Manager Tony Vitello signaled a potential late-season return for newly acquired infielder Mayer with the San Francisco Giants.
What to watch next
- Whether Kristian Campbell receives a promotion to the major league roster later in the season
- Updates on Ceddanne Rafaela and Anthony Seigler regarding their recovery timelines from the injured list
confidence 100%Sources used for this update (7)
- sports.yahoo.com — Red Sox reveal why Kristian Campbell did not replace Ceddanne Rafaela
- sports.yahoo.com — Why Red Sox Didn’t Call Up Kristian Campbell To Replace Injured Ceddanne Rafaela
- ca.sports.yahoo.com — Vitello Provides Update on Mayer's Impending Giants Debut
- sports.yahoo.com — How The 2026 Boston Red Sox Came Back From The Dead
- www.mlbtraderumors.com — Red Sox Activate Willson Contreras, Place Anthony Seigler On 10-Day IL
- www.nbcsports.com — Xavier Edwards rejoins Marlins’ lineup on Sunday
- www.nbcsports.com — Otto Lopez drives in two runs Sunday vs. LAD
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Red Sox Roster Shifts As Boston Chases October
The Boston Red Sox manage their roster during the final month of the regular season while dealing with multiple player injuries and movements. Infielder Isiah Kiner-Falefa returned from the 60-day injured list following a forearm injury on September 1. Meanwhile, right-hander Tyron Guerrero went to the injured list due to right shoulder inflammation. Christian Koss contributed offensively by hitting a pair of homers to drive in three runs against the Mets on Saturday. Ryan Gusto experienced a difficult outing against the Cubs on Sunday afternoon by allowing five runs over 4 2/3 innings.
Why it matters
Roster management becomes crucial as teams handle the final stretch of the regular season with postseason implications on the line. Boston works to recover key personnel who could impact their push for October baseball. Player health remains a determining factor for teams balancing performance and recovery during the closing weeks.
What is confirmed
- Isiah Kiner-Falefa was activated from the 60-day injured list on September 1 following a forearm injury.
- Tyron Guerrero was placed on the injured list on Tuesday afternoon due to right shoulder inflammation.
- Christian Koss hit a pair of homers to drive in three runs against the Mets on Saturday.
- Ryan Gusto surrendered five runs on 10 hits over 4 2/3 innings in a loss to the Cubs on Sunday.
What to watch next
- Monitor the recovery timelines of injured Red Sox players returning for the October push.
- Track further roster adjustments made by Boston through the final month of the regular season.
confidence 100%Sources used for this update (5)
- www.mlbtraderumors.com — Notes Rumors - MLB Trade Rumors
- www.usatoday.com — Several injured Red Sox could return in time to impact an October run
- sports.yahoo.com — NFL news, live updates: Pro Football Hall of Fame voting process revamped after Bill Belichick snub; WR Michael Wilson, Cardinals reportedly agree on 3-year extension
- www.nbcsports.com — Christian Koss has first career two-homer game
- www.nbcsports.com — Ryan Gusto struggles in loss to Cubs on Sunday
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Red Sox activate Isiah Kiner-Falefa as Tyron Guerrero joins injured list
The Boston Red Sox activated infielder Isiah Kiner-Falefa from the 60-day injured list on September 1 following a forearm injury. This roster move comes as the team loses right-hander Tyron Guerrero, who was placed on the injured list Tuesday afternoon due to right shoulder inflammation. These shifts occur as Boston manages its roster for the final month of the regular season, while former prospect Marcelo Mayer remains sidelined with a right foot bone bruise after his trade to the San Francisco Giants.
Why it matters
Boston has focused on bullpen strength since the trade deadline, posting a 2.66 ERA. The team holds a 72-59 record and a 40-13 run dating back to June 25.
What is confirmed
- The Red Sox activated infielder Isiah Kiner-Falefa from the 60-day injured list.
- Right-hander Tyron Guerrero was placed on the injured list Tuesday afternoon with right shoulder inflammation.
What to watch next
- The recovery timeline for Tyron Guerrero's shoulder inflammation
- The debut date for Marcelo Mayer with the San Francisco Giants
confidence 100%Sources used for this update (7)
- www.bostonherald.com — Boston Red Sox news, stats, analysis, updates | Boston Herald
- www.mlbtraderumors.com — MLB Transactions - MLB Trade Rumors
- www.mlbtraderumors.com — Cleveland Guardians Rumors - MLB Trade Rumors
- www.nytimes.com — MLB Power Rankings: A top-5 shake-up; How do each team’s trade deadline moves look now?
- www.foxsports.com — ISIAH KINER-FALEFA NEWS
- www.nbcsports.com — Red Sox bring Kiner-Falefa (forearm) off the IL
- ca.sports.yahoo.com — Who Will Step Up For Boston Red Sox in Tyron Guerrero's Absence?
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Marcelo Mayer remains sidelined as Red Sox bullpen surges
Marcelo Mayer is on the injured list with a right foot bone bruise, delaying his debut for the San Francisco Giants after being traded from Boston. While Mayer is unavailable, the Red Sox have leveraged the trade to bolster their bullpen. Boston relievers have posted a 2.66 ERA since the deadline, the best mark in the American League. This pitching strength helped the Red Sox reach a 72-59 record, including a 40-13 run since June 25.
Why it matters
The Giants viewed the 23-year-old shortstop as a long-term infield solution. His absence coincides with further roster depletion in San Francisco, including a right forearm strain for Adrian Houser.
What is confirmed
- The Boston Red Sox hold a 72-59 record.
- Boston has a 40-13 record since June 25.
- Red Sox relievers have a 2.66 ERA since the deadline.
Still unconfirmed
- Erik Miller has provided a major boost to the Red Sox since the Marcelo Mayer trade.
- Adrian Houser is on the injured list with a right forearm strain.
What to watch next
- Mayer's return date from the injured list
- The Giants' infield depth management during Mayer's absence
confidence 90%Sources used for this update (4)
- heavy.com — Red Sox Get Major Erik Miller Boost After Marcelo Mayer Trade
- sports.yahoo.com — Red Sox Get Major Erik Miller Boost After Marcelo Mayer Trade
- sports.yahoo.com — Houser Becomes Latest Giant to Join Injured List
- apnews.com — Slugger Juan Soto delivers for the Mets vs. Astros in return to lineup
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Red Sox Place Marcelo Mayer On Injured List
The Boston Red Sox have placed Marcelo Mayer on the injured list due to a right foot bone bruise. Mayer was recently traded to the San Francisco Giants, but has not played for them since the trade. The 23-year-old shortstop's debut with the Giants has been delayed. Mayer was considered a potential long-term solution for the Giants' infield.
Why it matters
The injury adds to the challenges faced by the Giants, who have struggled on the road and are currently on a trip to Cleveland. The Red Sox and Giants made the trade at the deadline. Mayer's injury setback occurs as the Giants' season is fading, with the NL West standings seeing dramatic developments.
What is confirmed
- Marcelo Mayer has a right foot bone bruise.
- Mayer was traded from the Boston Red Sox to the San Francisco Giants at the trade deadline.
- Mayer's debut with the Giants has been delayed due to the injury.
- The Giants have not won a road series since mid-June.
What to watch next
- The Giants' series against the Cincinnati Reds
- Updates on Mayer's recovery progress
- The impact on the Giants' and Red Sox's playoff chances
confidence 100%Sources used for this update (7)
- www.mercurynews.com — Marcelo Mayer’s SF Giants debut delayed by right foot bone bruise
- ca.sports.yahoo.com — Red Sox Won't Face Marcelo Mayer, And Explanation Is All Too Familiar
- sports.yahoo.com — As Giants fade into also-rans, NL West packed with dramatic developments
- www.foxsports.com — 2026 MLB Power Rankings: Key Injuries Worth Monitoring On Every Team
- sports.yahoo.com — Red Sox place five players among ESPN’s top MLB award contenders
- www.si.com — Red Sox Find Long-Term Silver Lining in Garrett Crochet's Rehab
- ca.sports.yahoo.com — Giants-Reds Series Preview: How to Watch, Starting Pitchers, Injured List
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Marcelo Mayer Sidelined With Right Foot Bone Bruise
San Francisco Giants manager Tony Vitello announced Friday that shortstop Marcelo Mayer is dealing with a bone bruise in his right foot. The 23-year-old recently joined the Giants via a trade from the Boston Red Sox. This injury adds to a challenging period for the Giants, who have not won a road series since mid-June and are currently struggling during a trip to Cleveland. The team previously viewed Mayer as a potential long-term solution for their infield roster.
Why it matters
Mayer previously spent time on the Red Sox 10-day injured list due to a left forearm bone stress reaction. His move to San Francisco followed a period of heavy roster turnover in Boston.
What is confirmed
- Giants manager Tony Vitello stated on Friday that Marcelo Mayer has a bone bruise on his right foot.
- The San Francisco Giants have not won a series away from Oracle Park since the middle of June.
What to watch next
- Official timeline for Mayer's return to the active roster
- Giants roster adjustments to cover the shortstop position during Mayer's absence
confidence 100%Sources used for this update (5)
- sports.yahoo.com — Giants Road Woes Remain Glaring After Latest Losses to Guardians
- www.rotoballer.com — Weekend Waiver Wire Rankings: Fantasy Baseball Pickups for Week 21
- www.nbcsports.com — Marcelo Mayer dealing with bone bruise in foot
- www.nbcsports.com — Garcia strikes out two to pick up sixth save
- www.rotoballer.com — 3 Impact Fantasy Baseball Prospects To Stash - James Tibbs III, Michael Arroyo, Manuel Pena
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San Francisco Giants Trade for Shortstop Marcelo Mayer
The San Francisco Giants acquired 23-year-old shortstop Marcelo Mayer from the Boston Red Sox in a recent trade. Mayer previously spent time on the Red Sox 10-day injured list with a left forearm bone stress reaction. Giants manager Tony Vitello has responded to the acquisition, and the team views the move as a potential long-term solution for their infield. This transaction follows a period of significant roster turnover for Boston, which included the acquisition of Adley Rutschman in a major trade-deadline deal and a managerial change earlier this season.
Why it matters
The Red Sox have undergone a leadership shift since April 25, when ownership replaced manager Alex Cora with Chad Tracy. General Manager Craig Breslow has aggressively reshaped the roster around the August 3 deadline. These moves aim to stabilize a team that started the season with a 10-17 record.
What is confirmed
- The San Francisco Giants traded with the Boston Red Sox for 23-year-old shortstop Marcelo Mayer.
- The Red Sox fired manager Alex Cora on April 25 when the team was 10-17 and replaced him with Chad Tracy.
Still unconfirmed
- The Giants intend for one of their new acquisitions to be a long-term solution at second base.
- Craig Breslow orchestrated one of the biggest trade-deadline deals in franchise history to acquire Adley Rutschman.
What to watch next
- Announcement of Marcelo Mayer's injury rehab assignment start date
- Confirmation of the specific players traded from San Francisco to Boston in exchange for Mayer
confidence 90%Sources used for this update (6)
- www.oneidadispatch.com — Bill Madden: Trying to make sense of this stunning Red Sox surge
- ca.sports.yahoo.com — Giants New Second Baseman Could Begin Injury Rehab Assignment Soon
- www.bostonglobe.com — How the Red Sox landed Adley Rutschman: Inside the warroom where Boston decided to go for it
- sports.yahoo.com — Marcelo Mayer Announced Status Update After San Francisco Giants Trade
- sports.yahoo.com — San Francisco Giants Manager Reacts to Team Trading for 23-Year-Old Shortstop
- sports.yahoo.com — Jakob Marsee: Miami Marlins' Defensive Gem or Offensive Liability
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Red Sox Place Marcelo Mayer On Injured List
The Boston Red Sox have placed Marcelo Mayer on the 10-day injured list due to a left forearm bone stress reaction. Tsung-Che Cheng will take over as starting shortstop. This move coincides with the team's efforts to manage internal injuries and engage in external discussions involving top prospects and established players following the August 3 MLB trade deadline.
Why it matters
The Red Sox are dealing with roster instability due to injuries and are making adjustments as the trade deadline has passed. The team's management is focused on balancing internal roster management with external acquisitions and trades.
What is confirmed
- The Boston Red Sox have moved Marcelo Mayer to the 10-day injured list with a left forearm bone stress reaction.
- The Red Sox acquired All-Star catcher Adley Rutschman from the Baltimore Orioles.
- Rob Refsnyder, a longtime Boston Red Sox utility player, has been released by the Seattle Mariners.
- The Red Sox have received high marks for their performance at the MLB trade deadline.
Still unconfirmed
- The Red Sox are engaged in external discussions involving top prospects and established players.
What to watch next
- The Red Sox's performance in the upcoming series against the White Sox
- Further updates on the injuries of Curtis Mead and Marcelo Mayer
- The impact of Adley Rutschman on the Red Sox roster and performance
confidence 90%Sources used for this update (5)
- www.nytimes.com — MLB trade deadline grades for all 30 teams: Dodgers, Tigers, Red Sox earn high marks
- sports.yahoo.com — Seattle Mariners Announce Release of 4-Year Boston Red Sox Player
- heavy.com — Boston Red Sox Announce Roman Anthony, Garrett Crochet Update Before White Sox Series
- turnto10.com — Red Sox get All-Star catcher Adley Rutschman from AL East rival Orioles
- sports.yahoo.com — Red Sox trade deadline grades: Mixed reviews for Breslow's moves
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Red Sox Place Marcelo Mayer On Injured List
The Boston Red Sox have placed Marcelo Mayer on the 10-day injured list due to a left forearm bone stress reaction. Tsung-Che Cheng will take over as starting shortstop. This move coincides with the team's engagement in external trade discussions. The Red Sox also received All-Star catcher Adley Rutschman from the Orioles before the trade deadline.
Why it matters
The Red Sox are managing internal injuries while making external roster moves. The team's chief baseball officer, Craig Breslow, made several bold moves at the MLB trade deadline. The roster instability and trades have received mixed reviews from experts.
What is confirmed
- The Boston Red Sox have placed Marcelo Mayer on the 10-day injured list with a left forearm bone stress reaction.
- Tsung-Che Cheng takes over as starting shortstop.
- The Red Sox received All-Star catcher Adley Rutschman from the Orioles.
- Rob Refsnyder, a longtime Boston Red Sox utility player, has been released by the Seattle Mariners.
What to watch next
- The Red Sox's performance with their updated roster
- The impact of Marcelo Mayer's injury on the team's short-term prospects
- Further trades or roster moves by the Red Sox
confidence 90%Sources used for this update (5)
- www.nytimes.com — MLB trade deadline grades for all 30 teams: Dodgers, Tigers, Red Sox earn high marks
- sports.yahoo.com — Seattle Mariners Announce Release of 4-Year Boston Red Sox Player
- heavy.com — Boston Red Sox Announce Roman Anthony, Garrett Crochet Update Before White Sox Series
- turnto10.com — Red Sox get All-Star catcher Adley Rutschman from AL East rival Orioles
- sports.yahoo.com — Red Sox trade deadline grades: Mixed reviews for Breslow's moves
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Red Sox Manage Shortstop Injuries Amid Trade Deadline Talks
The Boston Red Sox have moved Marcelo Mayer to the 10-day injured list with a left forearm bone stress reaction. Tsung-Che Cheng takes over as starting shortstop while Curtis Mead also remains on the IL. This roster instability coincides with the August 3 MLB trade deadline. While the team manages internal injuries, they are engaged in external discussions involving top prospects and established players as the 6 p.m. Monday cutoff approaches.
Why it matters
Roster depth is critical as the Red Sox evaluate their position before the trade deadline. The team recently acquired Caleb Durbin in a trade that also brought in utility player Andruw Monasterio. These moves provide some flexibility as the front office navigates injuries to key infielders.
Still unconfirmed
- The Angels requested top prospect Franklin Arias during trade talks for Zach Neto
- Andruw Monasterio was an afterthought in the Caleb Durbin trade
What to watch next
- The 6 p.m. Monday trade deadline results
- Updates on Marcelo Mayer's recovery timeline
confidence 90%Sources used for this update (4)
- abc7.com — 2026 MLB trade deadline preview: Passan's intel on every team
- sports.yahoo.com — Red Sox utility man Andruw Monasterio has quietly become one of baseball's hottest hitters
- www.bostonglobe.com — Will Tarik Skubal stay in Detroit or go? That’s the top storyline heading into Monday’s trade deadline.
- www.mlbtraderumors.com — Angels Have Sought Franklin Arias In Neto Talks With Red Sox
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Red Sox Place Marcelo Mayer On Injured List
The Boston Red Sox have placed Marcelo Mayer on the 10-day injured list due to a bone stress reaction in his left forearm. Tsung-Che Cheng will replace him as the starting shortstop. The team is dealing with injuries as Curtis Mead is also on the IL.
What's confirmed:
- The Boston Red Sox have placed Marcelo Mayer on the 10-day injured list.
- Mayer is sidelined with a bone stress reaction in his left forearm.
- Tsung-Che Cheng will replace him as the starting shortstop.
- Curtis Mead is on the IL and likely to avoid surgery.
Still unconfirmed:
- The Red Sox can still make blockbuster trades to become AL favorites.
confidence 80%Sources used for this update (4)
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Red Sox Place Marcelo Mayer on 10-Day Injured List
The Boston Red Sox have placed infielder Marcelo Mayer on the 10-day injured list. He is sidelined with a bone stress reaction in his left forearm. Tsung-Che Cheng will replace him as the starting shortstop.
What's confirmed:
- The Red Sox placed Marcelo Mayer on the 10-day injured list.
- Mayer has a bone stress reaction in his left forearm.
- Tsung-Che Cheng is making his Red Sox debut as the starting shortstop against the Yankees.
confidence 100%Sources used for this update (14)
- Red Sox Place Marcelo Mayer On Injured List
- Red Sox place infielder Marcelo Mayer on IL with forearm injury
- Mayer placed on IL with bone stress reaction in left forearm
- New Red Sox shortstop will debut Friday night vs. Yankees (lineups)
- Red Sox place Marcelo Mayer on injured list with stress reaction in his forearm
- 5-Foot-8 Tsung-Che Cheng Makes Red Sox Debut Starting Shortstop vs Yankees
- Boston Red Sox Rookie Shortstop Lands on Injured List
- World Cup injury tracker: Neymar, Mohamed Salah and Reece James updates
- Red Sox place Marcelo Mayer on IL with forearm injury
- Red Sox place infielder Marcelo Mayer on IL with forearm injury
- Red Sox place Marcelo Mayer on 10-day IL with forearm issue
- Red Sox place Marcelo Mayer on 10-day injured list
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