The Red Sox are promoting top infield prospect Marcelo Mayer, reports ESPN’s Jeff Passan. Katie Morrison-O’Day of MassLive first noted that Mayer was being congratulated by his teammates in the clubhouse at Triple-A Worcester. Her MassLive colleague Christopher Smith reported that the former first-round pick is headed to Fenway Park to meet the team in Boston.
The promotion comes as Alex Bregman navigates a right quad injury that seems likely to send him to the 10-day injured list. Bregman came out of yesterday’s blowout win over the Orioles in the fifth inning. He came up a bit gimpy after making an aggressive turn around the first base bag on a single off the Green Monster. He immediately exited in favor of Abraham Toro. The team is still awaiting MRI results after Bregman went for imaging this morning. Manager Alex Cora told reporters (including WEEI’s Rob Bradford) that the star third baseman woke up with more soreness than he’d expected today.
Boston did not place Bregman on the IL before the first game of today’s doubleheader. There’s a good chance that’ll come between games tonight. They’ll also need to clear a spot on the 40-man roster for Mayer, but that can easily be achieved by transferring Triston Casas to the 60-day injured list.
Cora has already shot down the idea that Rafael Devers could see any third base time in Bregman’s absence. He’ll remain a full-time designated hitter. That means the 22-year-old Mayer should be in the lineup on a near everyday basis at third base. He obviously can’t be expected to replace the production they’re losing with Bregman’s absence. The two-time All-Star takes a .299/.385/.553 batting line to his likely stint on the injured list.
Mayer has very little experience at the hot corner. He started one game there in Double-A in each of the 2023 and ’24 seasons. He’s added four more appearances at the position in Triple-A this year. Mayer has taken the vast majority of his professional reps as a shortstop. He’d moved more frequently to second base over the past few days. That wasn’t because of any question about whether he can hold up at shortstop. It was instead in preparation for what seemed to be his best path to an MLB debut — playing second base with Kristian Campbell preparing to slide to first base after the Casas injury.
While there may be some growing pains given Mayer’s lack of experience at the hot corner, it’s common for shortstops to move to other infield positions. He has the plus arm for the position and is generally regarded as a sure-handed infielder. At 6’3″, Mayer is on the bigger side for a shortstop. His range, while adequate, has never been the strongest point of his defensive profile. That’s less of a concern at third base.
More to come.