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    In-house Bayesian model · career prior + aging × stuff/discipline signals
  • Plate Discipline
    Decision+ · chase / passive cost · K% · BB%
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    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
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    Luck-neutral fantasy points · xSLG / xwOBA · ΔPts
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    Power × discipline tradeoff · Pareto-frontier hitters
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    Process × contact-suppression · pound the zone vs limit damage
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    Biggest pitch-trait strengths & weaknesses · vs league or vs own
  • AAA Hitters
    Triple-A bats · xwOBA · contact quality · discipline · frontier
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Isiah Kiner-Falefa

Isiah Kiner-Falefa

2B / 3B / SS·BOS
Compare
Compare
BF
9
K %
0.0%
BB %
22.2%
xwOBA
.385
PTS
1
PPG
0.50
Career Seasons
YrGGSIPWLSVHLDERAFIPK%BB%K-BB%xwOBABABIPLOB%GB%PtsPPG
2025100.700000.003.100.0%0.0%0.0%.026.000—0.0%22.00
2024 MLB Percentiles

Pitching Profile

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

Arsenal
FB Velo
0
—
FB Spin
0
—
2024
2
0
2.0
0
0
0
0
4.50
6.10
0.0%
22.2%
-22.2%
.385
.143
66.7%
28.6%
1
0.50
2023404.000002.252.606.3%0.0%6.3%.384.26775.0%20.0%71.75
Extension
0
5.28
Results
xwOBA
0
.385
Barrel %
0
14.3
Hard-Hit %
100
28.6
K %
0
0.0
BB %
0
22.2
Chase %
0
9.1
Whiff %
0
0.0
Command & Stuff

Pitching+

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

Pitching+
-37
≈ 1th pctl
Stuff+
15
if they swing
Command+
11
out-of-zone take RV
Strike quality+
-18
RV of in-zone pitches
Crushable pitches
61.1%
11 meatballs
Putaway counts (0-2, 1-2)
—
RV per pitch · league 0.046
— on avg · 0 pitches
Lower RV = more wasted whiff chances when they choose not to put hitters away.
Hitter's counts (3-0, 3-1, 2-0)
0.129
RV per pitch · league 0.031
+0.098 worse than avg · 4 pitches
How often they groove get-me-overs vs. nibble safely.
Based on 18 pitches. RV = Statcast delta_run_exp; lower = better for the pitcher.
Pitch Arsenal
PitchUsageVeloSpinIVBHBExtWhiff%Zone%CSW%Chase%PutAway%xwOBA
OtherFA
100.0%67.81473+18.1+3.55.280.0%38.9%0.0%9.1%—0.382

2024 Movement Profile (Induced Break)

MLB Avg.
6"12"18"24"24"24"24"1B ◀ MOVES TOWARD ▶ 3B▲MORERISE▼MOREDROPARMANGLE64°100 PITCHSAMPLE
FA
Usage100%
MPH67.8
RHP Avg67.9

2024 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 · 18″arm side ◀ ▶ glove sidedrops ◀ ▶ rises
Side View
depth × vertical
1′2′3′4′5′6′-3′0′5′10′15′20′23′FA · 92″DECISION POINTPLATEfeet to plate
swing time150 ms

Each pitch is launched from a shared decision point (5.44′ height) and advanced using its own Statcast kinematics (release velocity + constant acceleration, so gravity, drag, and Magnus are all in the curve). RHP.

2024 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
FA-2′-1′0′1′2′1′2′3′4′1B ◀ catcher view ▶ 3B
At the Plate
Where they actually cross
FA-2′-1′0′1′2′1′2′3′4′1B ◀ catcher view ▶ 3B
FA

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.