Red Sox Top Prospect Eyed for Breakout Season

Marcelo Mayer expected to step up at third base in 2026 after Bregman's departure

Feb. 8, 2026 at 2:47pm

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The Boston Red Sox are counting on top prospect Marcelo Mayer to have a breakout season in 2026 as the team looks to make a deeper playoff run. Mayer, a 23-year-old infielder, is expected to take over at third base after the departure of Alex Bregman in free agency. With some MLB experience under his belt and improved health, the Red Sox believe Mayer could provide much-needed stability in the infield.

Why it matters

The Red Sox are aiming to build on their playoff appearance in 2025 and make a deeper run in 2026. Mayer's development will be crucial, as the team lost a key player in Bregman and has yet to find a replacement. A breakout season from Mayer could provide a significant boost to the Red Sox's lineup and their chances of contending.

The details

Mayer appeared in 44 games for the Red Sox last season, hitting .228 with 4 home runs and 10 RBIs. He was the team's top prospect in 2024 and is expected to take over as the starting third baseman in 2026 after Bregman signed with the Chicago Cubs in free agency. With some big league experience and better health (Mayer missed the end of 2025 with a wrist injury), the Red Sox believe he could take a significant step forward this season.

  • Mayer appeared in 44 games for the Red Sox in the 2025 season.
  • Mayer sustained a season-ending right wrist injury in 2025.
  • The Red Sox open the 2026 season on March 26 against the Cincinnati Reds.

The players

Marcelo Mayer

The Boston Red Sox's top prospect, expected to take over as the starting third baseman in 2026 after the departure of Alex Bregman.

Alex Bregman

Former third baseman for the Boston Red Sox, who signed with the Chicago Cubs in free agency.

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What they’re saying

“Even early this offseason, Mayer looked like a key to Boston's 2026 season. But his importance has only increased as the offseason has gone on, with Bregman departing in free agency and Craig Breslow's front office thus far being unable to land another impact player to handle second or third base.”

— Andrew Simon, Red Sox reporter, MLB.com (MLB.com)

What’s next

The Red Sox are set to open their 2026 season on March 26 against the Cincinnati Reds, where Mayer will look to establish himself as a key part of the team's lineup.

The takeaway

The development of top prospect Marcelo Mayer will be crucial for the Boston Red Sox in 2026, as the team looks to build on their playoff appearance last season and make a deeper run. Mayer's ability to step up at third base and provide stability in the infield could be the difference-maker for the Red Sox this year.