WK
SP

William Kempner

Miami Marlins active

William Kempner is a SP for the Miami Marlins (MLB). Currently active. Kempner was called upon to pitch Thursday against Seattle and Saturday versus Cleveland and struggled in both games, ...

Frequently Asked Questions

Is William Kempner playing this week?
As of July 16, 2026, no injury designation has been reported for William Kempner. He is expected to be available this week.
Should I start William Kempner in fantasy baseball this week?
Start/sit decisions for William Kempner depend on current injury status, matchup, and recent usage. See PlayCaller's live analysis above for the most current recommendation.
What is William Kempner's injury status?
William Kempner's most recent injury report (injury_update): Kempner was called upon to pitch Thursday against Seattle and Saturday versus Cleveland and struggled in both games, allowing four runs on five hits with three strikeouts and two walks over 2. Current roster designation: active.
How has William Kempner been performing recently?
Recent stat lines for William Kempner update as games complete during the active season. Check the stats section above for the latest data.
Recent Performance

  Stats update during the season. Get AI-powered recommendations below.

William Kempner takes the mound for Miami as a starting pitcher with the Marlins. Without recent performance data available, his current role and trajectory remain unclear, but he's part of the organization's rotation. Watch how he develops as the season progresses.

See Also
Agustín Ramírez
C
Agustín Ramírez
C · Miami Marlins
AN
SP
Andrew Nardi
SP · Miami Marlins
AB
SP
Anthony Bender
SP · Miami Marlins
Braxton Garrett
SP
Braxton Garrett
SP · Miami Marlins
Christopher Morel
1B
Christopher Morel
1B · Miami Marlins
Connor Norby
1B
Connor Norby
1B · Miami Marlins
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