William Kempner Career Stats by Season
| 2026 Preseason | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 2 | 0 | 4 |
| 2025 Preseason | 4 | 0 | 0 | 0 | 2 | 3 | 2 | 2 | 1 | 1 | 4 |
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Frequently Asked Questions
What position does William Kempner play?
William Kempner plays Pitcher for Marlins.
What team does William Kempner play for?
William Kempner currently plays for Marlins in the MLB.
How tall is William Kempner?
William Kempner is 6'0" tall.
Where did William Kempner go to college?
William Kempner attended .
Where can I find William Kempner's stats?
You can find comprehensive statistics for William Kempner on this page, including current season stats and game-by-game performance data. The stats are updated regularly to show their latest performance in MLB.
What is William Kempner's background?
William Kempner currently serves as a pitcher for the Miami Marlins, donning jersey #53 on the mound. The 6'0", 222-pound right-hander brings a powerful presence to the pitching staff with his imposing frame and competitive demeanor. Born on June 18, 2001, in San Jose, California, Kempner developed his baseball skills in the Golden State before taking his talents to Gonzaga University, where he refined his pitching arsenal against collegiate competition. Known for his high-velocity fastball and developing secondary pitches, Kempner has shown promise as he continues to adapt to professional baseball. His journey from the Bay Area to the majors represents years of dedication to his craft, building on the foundation established during his time with the Bulldogs. As he gains experience at the professional level, Kempner aims to become a reliable contributor to the Marlins' pitching rotation for years to come. William Kempner was born in San Jose, CA, USA.