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Player

Christian Koss

SFSSBats 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

612

Chase%

40.1%

Zone swing%

69.8%

Whiff%

26.5%

xwOBA

0.251

Barrel%

4.8%

Hard-hit%

28.0%

Avg EV

82.0 mph

Swing Decision Value

64

Decision

65

Contact

77

Damage

11

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 Fastball19531.9%23.1%34.3%0.223
Sinker12520.4%11.8%41.1%0.330
Slider7311.9%48.7%43.8%0.221
Sweeper6911.3%36.1%51.3%0.277
Changeup6310.3%43.2%51.1%0.165
Cutter477.7%14.3%23.5%0.228
Curveball233.8%12.5%27.8%
Splitter61.0%33.3%25.0%
Knuckle Curve61.0%25.0%75.0%
Eephus30.5%0.0%
Slurve20.3%
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.