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# William Kempner
- URL: https://baseballthings.com/players/william-kempner/
- Published: 2020-01-01T12:00:00.000Z
- Updated: 2026-10-17T23:09:05.000Z
- Description: William Kempner: live stats, Statcast data and splits for the Miami Marlins right-handed pitcher.
- Author: Jason A. Churchill
- Tags: #player

## William Kempner's 2026 season

William Kempner pitched in 9 games out of the bullpen for the Miami Marlins in 2026, the season he made his MLB debut on May 5\. The right-hander worked 12⅓ innings with a 2.92 ERA and a 0.97 WHIP, striking out 14 (28.0 percent of batters) and walking 4 (8.0 percent). He was worth 0.1 fWAR.

Before his call-up, he posted a 3.98 ERA over 31⅔ innings at Triple-A Jacksonville Jumbo.