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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. OF peers

Rank #104 of 234

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

-500+50+100+150+200Zack Gelof
Zack Gelof · #60
V⁻ -51VORP -5V⁺ 0
Zack Gelof

Zack Gelof

2B / 3B / OF·ATH
Compare
Compare
PA
191
H
47
HR
8
AVG
.266
xwOBA
.286
PPG
1.98
Career Seasons
YrGPAAVGOBPSLGISOxwOBAK%BB%K-BB%HRSBPtsPPGxPPG
Proj71306.237.304.417.180.32029.0%8.6%20.4%11101371.92—
202649191.266
2026 MLB Percentiles

Hitting Profile

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

Expected Results
xwOBA
6
.286
xBA
9
.218
.312
.458
.192
.286
26.2%
5.8%
20.4%
8
5
97
1.98
—
202527101.174.232.272.098.21945.5%6.9%38.6%2160.22—
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
26
.386
Quality of Contact
Avg EV
20
87.0
Median EV
0
66.5
90th % EV
0
93.5
Barrel %
44
8.5
Hard-Hit %
38
40.3
Sweet-Spot %
6
29.5
Bat Speed
Avg
69
72.2
Median
69
73.4
90th %
47
76.5
Plate Discipline
Chase %
79
24.0
Whiff %
25
26.3
K %
19
26.2
BB %
11
5.8
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+
111
≈ 87th pctl
Chase cost
-0.0r
1 swings @ bad pitch
Passive cost
-0.4r
3 takes @ hittable pitch
Swing rate
42.1%
19 pitches seen
Runs per 100
-2.07
lg avg -2.53
Count
View
11141222111CATCHER'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: 19