As the Boston Red Sox head into March, most of their roster questions are answered, but one key area remains uncertain: the performance of top prospect Marcelo Mayer. Manager Alex Cora recently emphasized the need for Mayer to step up his offensive game. While Mayer's defensive skills and base running have been impressive, his batting left much to be desired last season.
In 2025, Mayer hit .228 with four home runs and eight doubles over 127 at-bats. The power numbers aren't the issue here; it's the batting average that raises eyebrows. His struggles against left-handed pitching, particularly, were glaring, with a .200 average against lefty fastballs and an even tougher .097 against breaking balls.
Mayer's mission this spring is clear: improve at the plate. With an opportunity to shine at second base, especially after the recent acquisition of Caleb Durbin, Mayer has a chance to solidify his spot by Opening Day. The departure of 15 players for the World Baseball Classic gives him ample time to face left-handed pitching and work through his challenges.
Injuries have been a recurring theme in Mayer’s career. From a wrist injury in 2022 to shoulder inflammation in 2023, and a lumbar strain in 2024, his journey has been rocky.
Last year, a wrist strain required season-ending surgery. However, Mayer is optimistic, claiming he's stronger than ever and ready to move past these setbacks.
The competition is heating up, with Andruw Monasterio making waves in camp. If Mayer doesn't show improvement against lefties, Cora might opt for other lineup options by Opening Day. Worst-case scenario, Mayer could start in AAA, with Monasterio and Isiah Kiner-Falefa stepping in at second base.
Mayer has the talent and the time to prove himself. This spring training could be pivotal in determining his role with the Red Sox moving forward.