2024 Stats
AVG
.000
HR
0
RBI
0
R
0
SB
0
2025 Projections
2025 Fantasy Outlook
Mayer mastered Double-A (142 wRC+ in 77 games) after struggling at that level in 2023 (63 wRC+ in 43 games), but after another injury-marred season, his fragility is starting to become his most discussed quality. His 91 games in 2022 represent a career high, and perhaps fittingly, he was promoted to Triple-A in early August but never got into a game for Worcester due to hip and back injuries. He slashed .307/.370/.480 with eight home runs, 13 steals, a 19.7 percent strikeout rate and an excellent 31.5 percent hard-hit rate as a 21-year-old repeating Double-A. Mayer's best skills are his shortstop defense, followed by above-average power and a potentially above-average hit tool. He has multiple years with double-digit steals in the minors, but Mayer's pure speed is average at best, so we can't bank on him making a notable impact in stolen bases. Even if Mayer reached his realistic fantasy ceiling, he'd be a fringe top-15 fantasy shortstop due to the lack of a standout tool, and his durability issues make it difficult to sell him as a potential compiler in the Dansby Swanson mold. He'll be an option this summer if he's healthy and Trevor Story is hurt or struggling. Read Past Outlooks
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Has perfect Thursday
Mayer started at third base and went 3-for-3 with a triple, a home run and three RBI during Thursday's spring game against Detroit.
ANALYSIS
The Red Sox flexed their prospect muscle Thursday, bringing Mayer, Roman Anthony and Kristian Campbell along for a road game. Mayer had the best performance of the bunch and heeded manager Alex Cora's advice early by delivering a run on a first-inning triple to left-center. "We were talking about his swing today," Cora told Ian Browne of MLB.com. "In BP, he was rotational. He was pulling everything, and I talked to him a little bit. His first BP a few weeks ago, he was driving the ball to left-center, and that plays. I know we live in an environment where we preach 'Pull the ball in the air,' but he can drive the ball to left-center." Mayer eventually got his "pull" on, belting a two-run home run over the right-field fence in the fifth. He's likely to start the season at Triple-A Worcester, which would be his first exposure to the highest level of the minors.
The Red Sox flexed their prospect muscle Thursday, bringing Mayer, Roman Anthony and Kristian Campbell along for a road game. Mayer had the best performance of the bunch and heeded manager Alex Cora's advice early by delivering a run on a first-inning triple to left-center. "We were talking about his swing today," Cora told Ian Browne of MLB.com. "In BP, he was rotational. He was pulling everything, and I talked to him a little bit. His first BP a few weeks ago, he was driving the ball to left-center, and that plays. I know we live in an environment where we preach 'Pull the ball in the air,' but he can drive the ball to left-center." Mayer eventually got his "pull" on, belting a two-run home run over the right-field fence in the fifth. He's likely to start the season at Triple-A Worcester, which would be his first exposure to the highest level of the minors.
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Past Fantasy Outlooks
2024
2023
2022
Mayer will be a big-league regular, but the closer he gets to the majors, the less he looks like a future fantasy star. As one of the slower shortstop prospects of note, Mayer won't be a major threat on the bases, so he has to move the needle at the plate. His walk rate has decreased at every full-season stop, dipping to 7.9 percent in 43 games at Double-A, and his 25.8 percent strikeout rate at Double-A was the worst mark of his career. Mayer reportedly dealt with a left shoulder impingement during his struggles at Double-A, and he eventually got shut down in early-August and received an injection in September. He has a career .280/.371/.494 slash line with 11 home runs in 60 games at High-A, so if the injury was the cause of his issues at Double-A, he could bounce back with similar production to what he showed at High-A in 2022 and 2023. A big reason Mayer ranks highly on real-life prospect rankings is his plus defense at shortstop, and while that figures to guarantee him playing time in the future, that's the extent of its importance for his fantasy value. He could debut late this year, but don't expect him to produce at an acceptable clip in fantasy until at least 2025.
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Healthy for spring training
Mayer (back) took batting practice Wednesday and appears to be a full participant for the start of spring training, Christopher Smith of MassLive.com reports.
ANALYSIS
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Increasing versatility
Manager Alex Cora said Saturday that the Red Sox plan to give Mayer (back) more time at second and third base, Christopher Smith of MassLive.com reports.
ANALYSIS
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Begins baseball activity
Mayer (back) has started baseball activities, Jen McCaffrey of The Athletic reports.
ANALYSIS
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Likely done for season
Mayer has shifted his rehab program to the Red Sox's facility in Florida and is not expected to return from Triple-A Worcester's 7-day injured list before the end of the season while he recovers from a lumbar strain, Alex Speier of The Boston Globe reports.
ANALYSIS
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Goes back on Triple-A IL
Triple-A Worcester will place Mayer (hip) on the 7-day injured list Tuesday, Alex Speier of The Boston Globe reports.
ANALYSIS
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Latest Fantasy Rumors
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Unlikely to skip Triple-A
Sean McAdam of The Springfield Republican doesn't expect the Red Sox to call up Mayer directly from Double-A Portland this season.
ANALYSIS
The 21-year-old was limited to 78 games last season due to shoulder issues, but he's been healthy so far in 2024 and has hit well for Portland with a .293/.337/.467 slash line in 41 games. Mayer is Boston's top infield prospect, and the organization is unlikely to rush his development this summer. A promotion to Triple-A Worcester at some point in 2024 seems likely given his current production, and he should have a good chance of making his MLB debut in 2025.
The 21-year-old was limited to 78 games last season due to shoulder issues, but he's been healthy so far in 2024 and has hit well for Portland with a .293/.337/.467 slash line in 41 games. Mayer is Boston's top infield prospect, and the organization is unlikely to rush his development this summer. A promotion to Triple-A Worcester at some point in 2024 seems likely given his current production, and he should have a good chance of making his MLB debut in 2025.