Overview
- Boston traded Mayer to the San Francisco Giants in a deadline-area deal after the player and his family told the Red Sox they would be comfortable with a move.
- Mayer arrived in Boston as the No. 4 overall pick in 2021 but managed just 114 games for the Red Sox with a .223/.278/.346 slash line, seven home runs and 32 RBIs.
- Reporting says fans and sports-talk media in Boston soured on Mayer as injuries and uneven play piled up, and his father publicly defended him against harsh criticism.
- His injury history in Boston included a fouled ball off the foot, a shoulder issue from running the bases, multiple wrist setbacks that required surgery, back concerns, and a forearm stress reaction.
- Mayer debuted for the Giants and struck out in all four plate appearances, leaving the club with a fresh start but an urgent need to show improved health and consistency at the plate.