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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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Jacob Stallings

Jacob Stallings

C·BAL
Compare
Compare
BF
36
K %
2.8%
BB %
0.0%
xwOBA
.342
PTS
5
PPG
0.71
Career Seasons
YrGGSIPWLSVHLDERAFIPK%BB%K-BB%xwOBABABIPLOB%GB%PtsPPG
2025102.000004.502.1012.5%0.0%12.5%.328.28650.0%42.9%33.00
2023 MLB Percentiles

Pitching Profile

36 BF — below qualified cutoff. Percentiles vs. qualified pool (faded).

Arsenal
FB Velo
0
—
FB Spin
0
—
2023
7
0
8.0
0
0
0
0
4.50
5.23
2.8%
0.0%
2.8%
.342
.344
79.4%
33.3%
5
0.71
2019101.000000.003.100.0%0.0%0.0%.074.000—33.3%33.00
Extension
0
5.21
Results
xwOBA
18
.342
Barrel %
93
6.1
Hard-Hit %
79
36.4
K %
0
2.8
BB %
100
0.0
Chase %
93
33.3
Whiff %
0
4.0
Command & Stuff

Pitching+

Expected run-value conceded per pitch against a rational hitter, standardized against the season. 100 = avg · 110 = 1 SD better.

Pitching+
25
≈ 1th pctl
Stuff+
-15
if they swing
Command+
136
out-of-zone take RV
Strike quality+
0
RV of in-zone pitches
Crushable pitches
56.5%
52 meatballs
Putaway counts (0-2, 1-2)
0.067
RV per pitch · league 0.048
+0.019 worse than avg · 14 pitches
Lower RV = more wasted whiff chances when they choose not to put hitters away.
Hitter's counts (3-0, 3-1, 2-0)
0.069
RV per pitch · league 0.030
+0.039 worse than avg · 4 pitches
How often they groove get-me-overs vs. nibble safely.
Based on 92 pitches. RV = Statcast delta_run_exp; lower = better for the pitcher.
Pitch Arsenal
PitchUsageVeloSpinIVBHBExtWhiff%Zone%CSW%Chase%PutAway%xwOBA
OtherFA
48.9%72.61972+12.5+14.45.547.1%60.0%22.2%44.4%14.3%0.283
ChangeupCH
34.8%53.51499

2023 Movement Profile (Induced Break)

MLB Avg.
6"12"18"24"24"24"24"1B ◀ MOVES TOWARD ▶ 3B▲MORERISE▼MOREDROPARMANGLE27°100 PITCHSAMPLE
FACHCS
Usage49%35%16%
MPH72.653.542.4
RHP Avg67.486.1—
+18.0
+13.4
4.97
0.0%
62.5%
25.0%
25.0%
0.0%
0.412
Slow CurveCS
16.3%42.41499-3.3-13.84.770.0%20.0%6.7%25.0%0.0%0.390

2023 Swing-Out Snapshot

Commit at the decision point, then fast-forward 150ms. Where is each pitch when your bat crosses the zone? Two views of the same moment — catcher-facing and from the side.

Catcher View
horizontal × vertical
0.5′1′1.5′2′2.5′3′DECISIONPOINTFA · 17″CH · 17″CS · 18″arm side ◀ ▶ glove sidedrops ◀ ▶ rises
Side View
depth × vertical
1′2′3′4′5′6′-3′0′5′10′15′20′23′FA · 81″CH · 128″CS · 157″DECISION POINTPLATEfeet to plate
swing time150 ms

Each pitch is launched from a shared decision point (5.94′ height) and advanced using its own Statcast kinematics (release velocity + constant acceleration, so gravity, drag, and Magnus are all in the curve). RHP.

2023 Tunneling

Where pitches are when the hitter commits — and where they end up. Tighter cluster on the left = more deceptive arsenal.

At Decision
23 ft out · ~280ms before arrival
FACHCS-2′-1′0′1′2′1′2′3′4′1B ◀ catcher view ▶ 3B
At the Plate
Where they actually cross
FACHCS-2′-1′0′1′2′1′2′3′4′1B ◀ catcher view ▶ 3B
FACHCS

Decision point computed from Statcast kinematics (vx0/vy0/vz0, ax/ay/az) by projecting each pitch back to y = 23 ft. Coordinates in catcher’s view: 1B on the left, 3B on the right. RHP.