Red Sox trade Marcelo Mayer to Giants for Erik Miller
2 sources • 1 min read • Latest: Aug 4, 2026, 12:27 AM
Last updated Aug 4, 2026
The Boston Red Sox are trading infielder Marcelo Mayer to the San Francisco Giants in exchange for left-handed reliever Erik Miller. Mayer, a former top prospect, has struggled with injuries and performance, hitting.223 with 85 strikeouts in 114 games. Miller has a 2.72 ERA and will be under team control through the 2029 season. The teams are finalizing the deal, pending medical reviews. The Red Sox have also made other moves this trade deadline, acquiring catcher Adley Rutschman and outfielder Eli White.
- •Marcelo Mayer is traded to the San Francisco Giants.
- •Erik Miller joins the Red Sox as a bullpen arm.
- •Mayer has struggled with injuries and performance this season.
- •Miller has a solid 2.72 ERA this season.
- •Trade is pending medical reviews before finalization.
- 12:52 AMYahoo Sports — Red Sox trade Marcelo Mayer to Giants for lefty reliever who has had dominant year
- 12:27 AMYahoo Sports — BREAKING: Red Sox Trading Marcelo Mayer for 100MPH Lefty from Giants
- 12:01 AMMLB Trade Rumors — Red Sox, Giants Swap Marcelo Mayer For Erik Miller - MLB Trade Rumors
- 9:40 PMYahoo Sports — Red Sox trading former top prospect Marcelo Mayer to San Francisco in deal for lefty reliever
"The Boston Red Sox are reportedly sending former top prospect Marcelo Mayer to the San Francisco Giants for lefty reliever Erik Miller, per Ken Rosenthal. Giants close to acquiring Marcelo Mayer from Red Sox for reliever Erik Miller, sources tell me and Andrew Baggarly. — Ken Rosenthal (@Ken_Rosenthal) August 3, 2026 Ken Rosenthal writes […] The post BREAKING: Red Sox Trading Marcelo Mayer for 100MPH Lefty from Giants appeared first on HEAVY.
"The Red Sox give up on a former top prospect, sending him to the Giants for a talented but walk-prone lefty reliever.
"Another big deadline move for the Red Sox: Marcelo Mayer is headed to the Giants for a left-handed reliever.
Sources
External links- Yahoo SportsAug 4, 2026, 12:52 AMRed Sox trade Marcelo Mayer to Giants for lefty reliever who has had dominant year
Another big deadline move for the Red Sox: Marcelo Mayer is headed to the Giants for a left-handed reliever.
- Yahoo SportsAug 4, 2026, 12:27 AMBREAKING: Red Sox Trading Marcelo Mayer for 100MPH Lefty from Giants
The Boston Red Sox are reportedly sending former top prospect Marcelo Mayer to the San Francisco Giants for lefty reliever Erik Miller, per Ken Rosenthal. Giants close to acquiring Marcelo Mayer from Red Sox for reliever Erik Miller, sources tell me and Andrew Baggarly. — Ken Rosenthal (@Ken_Rosenthal) August 3, 2026 Ken Rosenthal writes […] The post BREAKING: Red Sox Trading Marcelo Mayer for 100MPH Lefty from Giants appeared first on HEAVY.
- MLB Trade RumorsAug 4, 2026, 12:01 AMRed Sox, Giants Swap Marcelo Mayer For Erik Miller - MLB Trade Rumors
The Red Sox give up on a former top prospect, sending him to the Giants for a talented but walk-prone lefty reliever.
- Yahoo SportsAug 3, 2026, 9:40 PMRed Sox trading former top prospect Marcelo Mayer to San Francisco in deal for lefty reliever
The Boston Red Sox are trading a once-vaunted prospect to the San Francisco Giants for another bullpen arm.
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