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2026 Pitching
| STATS |
IP
Innings Pitched
|
W
Wins
|
L
Losses
|
ERA
Earned Run Average
|
SO
Strikeouts
|
BB
Base on Balls (Walk)
|
|---|---|---|---|---|---|---|
| Regular Season | 1 | 0 | 0 | 0.00 | 1 | 0 |
Top William Kempner News
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Marlins' William Kempner: Sent back to minors
The Marlins optioned Kempner to Triple-A Jacksonville on Wednesday, Christina De Nicola of MLB.com reports.
Kempner was summoned Tuesday from the minors and made his major-league debut in Miami's 9-7 loss to Baltimore with a perfect inning out of the bullpen. He'll make room on the roster for a fresh bullpen arm in Dax Fulton, who was called up from Jacksonville in a corresponding move.
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Marlins' William Kempner: Recalled from Triple-A
The Marlins recalled Kempner from Triple-A Jacksonville on Tuesday, Christina De Nicola of MLB.com reports.
He's grabbing the roster spot vacated by Chris Paddack, who was designated for assignment. Kempner holds a 6.46 ERA this season with Jacksonville but has struck out a whopping 34 batters over 15.1 innings. He will be making his major-league debut when/if he enters a game.
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Marlins' William Kempner: Sent to Triple-A
The Marlins optioned Kempner to Triple-A Jacksonville on Sunday.
Kempner was added to Miami's 40-man roster in November but was never a likely bet to crack the Opening Day roster. The 24-year-old had a quality showing in his first taste of Triple-A last year with a 2.65 ERA, 1.35 WHIP and 25:15 K:BB over 17 innings, and he could make his MLB debut at some point in 2026 if he continues to pitch well for Jacksonville.
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Marlins' William Kempner: Joins 40-man roster
The Marlins selected Kempner's contract from Triple-A Jacksonville on Tuesday.
Kempner was acquired from the Giants last winter in exchange for international bonus pool space, and the Marlins won't leave him exposed to potentially being selected during the upcoming Rule 5 Draft. Across three minor-league levels in 2025, the 24-year-old pitched to a 2.26 ERA, 1.15 WHIP and 95:40 K:BB over 67.2 innings.
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Player Bio
| HT/WT: 6-0, 220 lbs |
| Birthplace: San Jose, CA |
| Age: 24 |
| Experience: R |
| Bats/Throws: R, R |