William Kempner
Bats
Right
Throws
Right
Height
6' 0"
Weight
222 lb
Born
Jun 18, 2001
Birthplace
San Jose, CA
MLB Service
0.033
Years.Days (est.)
Draft
2022 · Round 3, Pick 106 (San Francisco Giants)
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Current Contract
| 2026 | 2027 | 2028 | Free Agency | |
|---|---|---|---|---|
| Cap Hit | $438K | — | — | UFA2029 |
| Age | 25 | 26 | 27 |
MLB Pitching — Year by Year
2026 updates live from MLB| Year | Team | G | W-L | SV | IP | ERA | WHIP | K | WAR |
|---|---|---|---|---|---|---|---|---|---|
| 2026 | Miami Marlins | 9 | 1-0 | 0 | 12.1 | 2.92 | 0.97 | 14 | 0.1 |
| Career | 9 | 1-0 | 0 | 12.1 | 2.92 | 0.97 | 14 | 0.1 | |