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Player

Isiah Kiner-Falefa

BOS2BBats RThrows RActive

Season 2026 · as of 2026-09-14. Daily buckets for rates and trends; EV×LA, Decision / Contact / Damage, and 2023+ bat tracking are season grain. Zone heatmaps stay on Location.

Pitches faced

550

Chase%

31.8%

Zone swing%

66.3%

Whiff%

15.5%

xwOBA

0.314

Barrel%

2.5%

Hard-hit%

28.0%

Avg EV

81.5 mph

Swing Decision Value

67

Decision

69

Contact

85

Damage

17

Pitches faced
Share of pitches by type.
Plate discipline
Chase (out of zone) vs swing in the zone.
Pitch types faced
Compact rates for the filtered window.
PitchPitchesUsageWhiff%Chase%xwOBA
Four-seam Fastball15928.9%9.5%24.1%0.287
Sinker11520.9%7.8%26.5%0.297
Slider8715.8%27.7%36.4%0.458
Changeup539.6%27.6%45.7%0.374
Cutter478.5%9.7%56.5%0.267
Curveball417.5%15.4%25.8%0.297
Sweeper336.0%30.8%23.8%0.220
Splitter81.5%0.0%40.0%
Knuckle Curve40.7%
Eephus30.5%0.0%33.3%
Batted-ball mix
Ground ball, line drive, fly ball, popup.
Contact quality
Exit velo × launch angle (season). Dashed outline is the approximate barrel region.
Exit velo (mph)Launch angle (deg)5012050-30
Bat speed by pitch type
2023+ bat tracking. Mean bat speed on swings with a measured reading. Combined with the pitch types this hitter actually faced — not a miss-distance table.
Attack angle vs chase
Attack angle from bat-tracking cubes against chase% from pitches faced. Location behavior stays on Location; this is the pitch-type overlay.
Chase trend
Out-of-zone swing rate by game date.
Exit velo trend
Average exit velocity by game date.