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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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Yainer Diaz

Yainer Diaz

C·HOU
Compare
Compare
PA
377
H
100
HR
23
AVG
.282
xwOBA
.358
PPG
2.20
Career Seasons
YrGPAAVGOBPSLGISOxwOBAK%BB%K-BB%HRSBPtsPPGxPPG
202625106.248.269.356.108.25715.1%2.8%12.3%20441.76—
2025146570.255
2023 MLB Percentiles

Hitting Profile

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

Expected Results
xwOBA
74
.358
xBA
85
.280
.284
.415
.160
.329
16.7%
3.5%
13.2%
20
1
290
1.99
—
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
94
.546
Quality of Contact
Avg EV
64
90.3
Median EV
65
93.3
90th % EV
64
106.2
Barrel %
78
12.2
Hard-Hit %
62
43.9
Sweet-Spot %
88
39.4
Bat Speed
Avg
71
71.9
Median
72
73.3
90th %
67
77.9
Plate Discipline
Chase %
1
44.0
Whiff %
28
25.4
K %
56
19.6
BB %
0
2.9
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+
83
≈ 5th pctl
Chase cost
-35.7r
361 swings @ bad pitch
Passive cost
-6.8r
129 takes @ hittable pitch
Swing rate
58.6%
1,351 pitches seen
Runs per 100
-3.15
lg avg -2.54
Count
View
34453+29%725+17%12+5%19+18%22+46%2452+29%14-8%38-24%45-21%47-7%44+82%22+50%6+48%33+25%48-26%70-19%77-12%40+73%26+29%7+47%30+63%38+38%55+48%31+64%14+27%115+21%14+14%22+36%14+33%15+0%71CATCHER'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: 1,000