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2026 Stats
W
0
L
0
ERA
0.00
WHIP
0.00
IP
1.0
SO
1
SV
0
HLD
0
G
1
GS
0
Career Stats
W
0
L
0
ERA
0.00
WHIP
0.00
IP
1.0
SO
1
SV
0
HLD
0
G
1
GS
0
Year-by-Year Pitching
| Year | Team | G | GS | IP | W | L | SV | SO | ERA | WHIP | Awards |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | MIA | 1 | — | 1.0 | — | — | — | 1 | 0.00 | 0.00 |
Spring Training
Pitching
| Year | Team | G | GS | IP | W | L | SV | SO | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | MIA | 4 | — | 2.2 | — | — | — | 4 | 6.75 | 1.50 |
| 2026 | MIA | 4 | — | 4.0 | — | — | 1 | 6 | 0.00 | 0.75 |
Game Logs
Season selector loads one year at a time.
Pitching
| Date | Opponent | IP | H | R | ER | BB | SO | HR |
|---|---|---|---|---|---|---|---|---|
| 2026-05-05 | vs BAL | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 |
Transactions
Entire history • newest first.
2026-05-06
Miami Marlins optioned RHP William Kempner to Jacksonville Jumbo Shrimp.
2026-05-05
Miami Marlins recalled RHP William Kempner from Jacksonville Jumbo Shrimp.
2026-03-08
Miami Marlins optioned RHP William Kempner to Jacksonville Jumbo Shrimp.
2025-11-18
Miami Marlins selected the contract of RHP William Kempner from Jacksonville Jumbo Shrimp.
2025-02-28
RHP William Kempner assigned to Miami Marlins.
2025-01-15
San Francisco Giants traded RHP William Kempner to Miami Marlins for Future Considerations. International Bonus Pool Money.
2022-07-28
San Francisco Giants signed RHP William Kempner.
Scouting Report
Statcast-style percentiles • Basenerd theme
Season 2026
Ready
Basic Line
Season / Game
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Statcast Game Log
Per-game pitch metrics from Statcast
| Date | Pitches | Velo | BNStuff+ | BNCtrl+ | Whiff% | Zone% | Chase% | K% | BB% | xwOBA |
|---|---|---|---|---|---|---|---|---|---|---|
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