Red Sox, Giants Swap Marcelo Mayer For Erik Miller

Key Points:

• The San Francisco Giants acquired infielder Marcelo Mayer from the Boston Red Sox in exchange for left-handed reliever Erik Miller and outfield prospect Carlos Gutierrez, marking a surprising deadline move.
• Mayer, once a top prospect and 2021's fourth overall pick, struggled with injuries and underperformance in Boston, hitting .220/.282/.312 this season before going on the injured list; the Giants see potential in him given his minor league success and versatility.
• Boston appears to have moved on from Mayer due to depth at middle infield and other prospects, while Miller is a talented but inconsistent lefty reliever with strong strikeout and groundball rates, expected to bolster the Red Sox bullpen.
• Gutierrez, a 21-year-old High-A left fielder with solid hitting and on-base skills but limited power, was included by the Giants and is viewed as a potential fourth outfielder by Boston, who values his bat despite modest physical tools.
• Mayer remains under team control for several years with minor league options, giving the Giants flexibility to develop him at multiple infield positions, while Miller and Gutierrez represent Boston's efforts to strengthen their pitching depth and outfield prospects.