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Player

Isiah Kiner-Falefa

BOS2BBats RThrows RActive

Season 2025 · as of 2025-09-28. 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

1,632

Chase%

32.2%

Zone swing%

63.6%

Whiff%

12.4%

xwOBA

0.262

Barrel%

1.4%

Hard-hit%

27.5%

Avg EV

83.0 mph

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 Fastball43926.9%8.8%30.7%0.318
Sinker35721.9%5.1%26.0%0.278
Slider24915.3%13.8%34.5%0.248
Sweeper1579.6%14.9%29.3%0.230
Changeup1458.9%21.8%47.4%0.232
Cutter1187.2%11.7%32.2%0.232
Curveball845.1%17.2%21.4%0.226
Splitter332.0%33.3%52.4%0.193
Knuckle Curve301.8%18.8%27.8%0.202
Forkball120.7%22.2%62.5%
Slurve60.4%0.0%
Screwball10.1%
Unknown10.1%
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.