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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
570
H
139
HR
20
AVG
.255
xwOBA
.329
PPG
1.99
Career Seasons
YrGPAAVGOBPSLGISOxwOBAK%BB%K-BB%HRSBPtsPPGxPPG
202625106.248.269.356.108.25715.1%2.8%12.3%20441.76—
2025146570.255
2025 MLB Percentiles

Hitting Profile

Expected Results
xwOBA
43
.329
xBA
77
.269
xSLG
.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—
68
.468
Quality of Contact
Avg EV
44
90.0
Median EV
36
92.5
90th % EV
50
105.6
Barrel %
48
9.6
Hard-Hit %
34
42.2
Sweet-Spot %
42
35.6
Bat Speed
Avg
47
70.4
Median
44
71.8
90th %
48
76.9
Plate Discipline
Chase %
0
44.4
Whiff %
52
21.9
K %
74
16.7
BB %
1
3.5
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+
82
≈ 4th pctl
Chase cost
-51.7r
534 swings @ bad pitch
Passive cost
-7.9r
163 takes @ hittable pitch
Swing rate
59.5%
1,877 pitches seen
Runs per 100
-3.18
lg avg -2.53
Count
View
3555311+56%9+46%13+18%17+35%23+45%22+75%125+38%8-8%40-23%56-18%50+7%42+88%24+29%7+77%22+10%48-14%72-13%67-14%35+77%31+17%6+57%23+64%47+44%43+19%31+18%17+27%11+0%6+44%9+14%14+36%22+25%841CATCHER'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