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Player

Christian Koss

SFSSBats RThrows RActive

Focus 2026 pitches faced vs 2025. Timelines include every available Statcast season. Date windows stay on Arsenal and Hitting. Change-points are in-season detections, not year-over-year cards.

Change timeline
Dated 2026 detections. Click a mark to open the matching chart. Why shares below are stored associations.
What's changing
Date, metric, delta, and confidence. Show me why still opens the matching chart. Stored Why shares are associations, not proven causation.
  1. Aug 25MEDhitterExit velo-9.7 mphShow me why

    These shares are model-attributed associations, not proven causation.

  2. Aug 9MEDhitterExit velo+4.4 mphShow me why

    These shares are model-attributed associations, not proven causation.

Splitter chase

-41.7%

Curveball CSW

-24.9%

Knuckle Curve CSW

+19.0%

Sinker chase

+18.8%

Four-seam Fastball xwOBA

-0.155

Cutter xwOBA

-0.109

Four-seam Fastball chase

+10.0%

Changeup CSW

+9.3%

Arsenal mix
Pitch usage by season. Mix always shows every type; other charts honor the pitch-type filter.
Chase
Chase% by pitch type faced.
Exit velo
Average EV by pitch type faced.
Barrel / hard-hit
Contact quality across seasons.
Batted-ball mix
GB / LD / FB share.
Plate discipline
Chase%, zone swing%, and CSW% across rebuilt seasons.
Location change
Density share, focus minus compare. Diverging scale.
Catcher view
Zone change
Savant zones, same density delta.
Catcher view · Savant zones
Chase / zone swing
Chase and zone-swing rates by season.

612 pitches in 2026 · 2025–2026.