Erik Miller To Red Sox, Mayer To Giants

Red Sox trade for Erik Miller

Red Sox deadline buying with Miller Trade. Miller headed to Boston as Sox send Mayer to Giants.

Red Sox add again at deadline, land Erik Miller from Giants...

The Boston Red Sox continued their deadline buying spree by acquiring left-handed reliever Erik Miller from the San Francisco Giants for infielder Marcelo Mayer.

Miller, 28, was among the top relievers available ahead of the deadline. He owns a 2.76 ERA across 38 appearances this year, with 45 strikeouts in 32.2 innings pitched.

The Giants are close to acquiring infielder Marcelo Mayer from the Red Sox for reliever Erik Miller, per @Ken_Rosenthal and Andrew Baggarly. pic.twitter.com/XQhqX2JdJJ

— FOX Sports: MLB

 

(@MLBONFOX) August 3, 2026

The southpaw becomes Boston’s second major pickup of the day. The Sox had earlier landed three-time All-Star catcher Adley Rutschman from the Baltimore Orioles. 

Mayer, 22, is hitting .220/.282/.312 this season in his second year, with 3 home runs, 22 RBI and 3 stolen bases over 70 games. He steps in for Luis Arraez, who San Francisco dealt to the Philadelphia Phillies earlier.