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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. C peers

Rank #17 of 66

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

-300-200-1000+100Yainer Diaz
Yainer Diaz · #17
V⁻ -4VORP -233V⁺ 43
Yainer Diaz

Yainer Diaz

C·HOU
Compare
Compare
PA
110
H
26
HR
2
AVG
.250
xwOBA
.264
PPG
1.81
Career Seasons
YrGPAAVGOBPSLGISOxwOBAK%BB%K-BB%HRSBPtsPPGxPPG
Proj46182.265.300.425.161.31917.0%4.5%12.5%61952.08—
202626110.250
2026 MLB Percentiles

Hitting Profile

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

Expected Results
xwOBA
1
.264
xBA
31
.242
.278
.356
.106
.264
14.5%
3.6%
10.9%
2
0
47
1.81
—
2025146570.255.284.415.160.32916.7%3.5%13.2%2012901.99—
2024154621.298.328.440.142.34417.2%3.9%13.3%1623452.24—
2023118377.282.313.538.256.35819.6%2.9%16.7%2302602.20—
202249.125.222.250.125.27522.2%11.1%11.1%0020.50—
xSLG
6
.326
Quality of Contact
Avg EV
23
87.5
Median EV
26
90.3
90th % EV
15
101.8
Barrel %
10
3.3
Hard-Hit %
4
27.8
Sweet-Spot %
0
24.4
Bat Speed
Avg
56
70.6
Median
45
71.5
90th %
36
75.6
Plate Discipline
Chase %
4
42.5
Whiff %
48
21.7
K %
82
14.5
BB %
3
3.6
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+
91
≈ 19th pctl
Chase cost
-5.3r
57 swings @ bad pitch
Passive cost
-1.3r
20 takes @ hittable pitch
Swing rate
56.4%
227 pitches seen
Runs per 100
-2.90
lg avg -2.53
Count
View
21111+38%8+0%6+38%8+13%8214+13%8-15%13-12%17+38%8+50%6+43%7+0%6-15%13-29%14-10%1022+50%8+58%12+9%11+38%823154112CATCHER'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: 227