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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. SS peers

Rank #5 of 64

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

-200-1000+100Geraldo Perdomo
Geraldo Perdomo · #5
V⁻ 21VORP 47V⁺ 97
Geraldo Perdomo

Geraldo Perdomo

SS·ARI
Compare
Compare
PA
258
H
51
HR
3
AVG
.237
xwOBA
.326
PPG
2.24
Career Seasons
YrGPAAVGOBPSLGISOxwOBAK%BB%K-BB%HRSBPtsPPGxPPG
Proj100431.257.353.383.125.33613.4%12.5%0.9%7142472.47—
202663258.237
2026 MLB Percentiles

Hitting Profile

Expected Results
xwOBA
40
.326
xBA
57
.262
xSLG
.341
.349
.112
.326
12.0%
12.8%
-0.8%
3
8
141
2.24
—
2025165723.288.393.460.172.36011.5%13.0%-1.5%20285313.22—
2024101388.273.348.374.101.28814.9%9.3%5.6%392172.15—
2023163495.246.356.359.113.27817.4%12.9%4.5%6213051.87—
2022155501.194.285.262.068.27520.6%10.0%10.6%591911.23—
20211137.258.378.419.161.30316.2%16.2%0.0%00191.73—
9
.342
Quality of Contact
Avg EV
4
85.1
Median EV
21
89.6
90th % EV
7
100.3
Barrel %
7
3.1
Hard-Hit %
12
31.1
Sweet-Spot %
47
35.8
Bat Speed
Avg
2
64.0
Median
3
65.3
90th %
3
69.5
Plate Discipline
Chase %
91
21.8
Whiff %
95
10.2
K %
91
12.0
BB %
80
12.8
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+
114
≈ 91th pctl
Chase cost
-3.7r
38 swings @ bad pitch
Passive cost
-3.6r
71 takes @ hittable pitch
Swing rate
39.5%
372 pitches seen
Runs per 100
-1.96
lg avg -2.53
Count
View
21+0%62314+43%7-12%8+5%19+14%75+35%17-19%26-35%23-35%34-22%18+33%123+33%9-7%15-47%15-33%21-24%21+0%625+17%64-25%8-10%103323112CATCHER'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: 372