William Kempner · pitchtracker

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Pitch trajectory and Statcast data: Baseball Savant. Player metadata, schedule, and headshots: MLB Stats API and mlbstatic.com.

William Kempner · pitchtracker

Outcome

Swinging strike
Called strike
Ball
Foul
In play

Pitcher

William Kempner

RHP · MIA · debut 2026

Miami Marlins

Season

Arsenal

Four-Seam97.6 mph63% (5)
Sweeper83.8 mph38% (3)

Pitch type

Outcome

Batter side

Game

Rendering 8 pitches