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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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Zack Gelof

Zack Gelof

2B / 3B / OF·ATH
Compare
Compare
PA
300
H
72
HR
14
AVG
.267
xwOBA
.335
PPG
2.44
Career Seasons
YrGPAAVGOBPSLGISOxwOBAK%BB%K-BB%HRSBPtsPPGxPPG
202647179.267.316.448.181.29125.1%6.1%19.0%75962.04—
202527101.174
2023 MLB Percentiles

Hitting Profile

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

Expected Results
xwOBA
46
.335
xBA
34
.247
.232
.272
.098
.219
45.5%
6.9%
38.6%
2
1
6
0.22
—
2024140548.211.272.361.150.27434.3%6.9%27.4%17261671.19—
202370300.267.338.504.237.33527.3%8.7%18.6%14141712.44—
xSLG
55
.451
Quality of Contact
Avg EV
47
89.5
Median EV
51
92.4
90th % EV
23
103.8
Barrel %
67
11.1
Hard-Hit %
46
41.3
Sweet-Spot %
93
39.7
Bat Speed
Avg
46
70.2
Median
41
71.2
90th %
24
75.0
Plate Discipline
Chase %
41
28.7
Whiff %
3
32.2
K %
14
27.3
BB %
47
8.7
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+
107
≈ 76th pctl
Chase cost
-19.2r
198 swings @ bad pitch
Passive cost
-7.1r
137 takes @ hittable pitch
Swing rate
50.3%
1,154 pitches seen
Runs per 100
-2.28
lg avg -2.54
Count
View
434+11%9432+33%6+31%13-4%27+58%26+46%24+50%63+35%17-2%49-19%64-11%55-10%40+53%154+24%38+0%70-22%76-27%56-20%40+56%164+34%32+27%45+2%44+3%32+11%18+17%61+0%9+22%9+8%134511CATCHER'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