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  • Projections
    In-house Bayesian model · career prior + aging × stuff/discipline signals
  • Plate Discipline
    Decision+ · chase / passive cost · K% · BB%
  • Command & Stuff
    Pitching+ · Stuff+ · Command+ · meatball rate
  • Pitcher Stuff Lab
    In-zone whiff · xwOBAcon · tunnel · deception · count predictability
  • Stuff Model (diag)
    From-scratch XGBoost training runs, feature importance, pitcher grades
  • Expected Points
    Luck-neutral fantasy points · xSLG / xwOBA · ΔPts
  • Hitter Frontier
    Power × discipline tradeoff · Pareto-frontier hitters
  • Pitcher Frontier
    Process × contact-suppression · pound the zone vs limit damage
  • Hitter Vulnerabilities
    Biggest pitch-trait strengths & weaknesses · vs league or vs own
  • AAA Hitters
    Triple-A bats · xwOBA · contact quality · discipline · frontier
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Position cohort

Hitting value vs. SS peers

Rank #38 of 68

Each bar is one SS, ordered left-to-right by Value (blended). Center dot is VORP; whiskers span V⁻ → V⁺. This player is highlighted in blue.

-500+50+100+150Marcelo Mayer
Marcelo Mayer · #38
V⁻ -31VORP -14V⁺ 10
Marcelo Mayer

Marcelo Mayer

2B / 3B / SS·BOS
Compare
Compare
PA
228
H
45
HR
3
AVG
.220
xwOBA
.262
PPG
1.19
Career Seasons
YrGPAAVGOBPSLGISOxwOBAK%BB%K-BB%HRSBPtsPPGxPPG
Proj71309.246.305.388.142.30922.0%7.5%14.6%741381.94—
202668228.220
2026 MLB Percentiles

Hitting Profile

228 PA — below qualified cutoff. Percentiles vs. qualified pool (faded).

Expected Results
xwOBA
0
.262
xBA
3
.202
.286
.312
.092
.262
19.3%
7.0%
12.3%
3
2
81
1.19
—
202548137.227.272.398.171.26829.9%5.8%24.1%41741.54—
xSLG
1
.298
Quality of Contact
Avg EV
12
85.8
Median EV
65
93.8
90th % EV
14
101.3
Barrel %
27
6.1
Hard-Hit %
23
36.0
Sweet-Spot %
0
26.8
Bat Speed
Avg
76
72.9
Median
67
73.2
90th %
67
78.0
Plate Discipline
Chase %
55
29.2
Whiff %
30
25.1
K %
61
19.3
BB %
21
7.0
Swing Decisions

Plate Discipline · Decision+

Expected-run-value of every swing-or-take decision, against a league-average batter’s optimum. 100 = avg · 110 = 1 SD better.

Decision+
110
≈ 85th pctl
Chase cost
-3.8r
49 swings @ bad pitch
Passive cost
-2.4r
36 takes @ hittable pitch
Swing rate
47.8%
295 pitches seen
Runs per 100
-2.10
lg avg -2.53
Count
View
12412125+38%165+33%652+17%6+7%14-25%20-20%15-19%16+50%122+22%18-33%18-15%13-29%21-8%12+43%7255+17%125322311CATCHER'S VIEW
Judgment — swing% vs optimal
−35%−15%0+15%+35%
  • Red cells — swings more than an optimal batter would here (chasing).
  • Blue cells — swings less than optimal (too passive).
  • Number in cell: swing%-delta vs optimal. Top-right: pitches seen.
Total pitches shown: 295