WILLIAM
KEMPNER
#71 -
P
Status
In the minors (on 40-man roster)
Ht/Wt
6’0’’,
222 lbs
Bats/Throws
R /
R
Experience
0
years
(Rookie)
Debut
May 5, 2026
Born
Jun 18, 2001
(24 yrs)
San Jose, California
Drafted
Drafted by San Francisco in 2022 (3/106).
Acquired
Acquired in a trade with San Francisco in 2025.
VS.
William Kempner
STAT RANK
Season Stats
| Pitcher | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W Wins
|
L Losses
|
ERA Earned Run Average
|
G Games
|
GS Games Started
|
CG Complete Games
|
SHO Shutouts
|
SV Saves
|
HLD Holds
|
IP Innings Pitched
|
H Hits Allowed
|
R Runs Allowed
|
ER Earned Runs
|
HR Home Runs Allowed
|
BB Walks
|
SO Strikeouts
|
WHIP Walks and Hits Per Inning Pitched
|
|
| YTD | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0.00 |
Game Log
| Pitcher | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Date | Team | Opp |
GS
Games Started
|
Dec |
CG
Complete Games
|
SHO
Shutouts
|
IP
Innings Pitched
|
H
stats.by_season.headers.baseball.pitching.regular-season.tooltipss.h
|
R
stats.by_season.headers.baseball.pitching.regular-season.tooltipss.r
|
ER
Earned Runs
|
HR
Home Runs Allowed
|
BB
Walks
|
K | YTD W | YTD L | YTD SV | YTD ERA | YTD WHIP | Status |
| 2026-05-06 |
|
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | DNP |
| 2026-05-05 |
|
|
0 | - | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | - |
Transactions & Injuries
| Date | Description | |
|---|---|---|
| 2026-05-06 |
Optioned to Jacksonville (AAA).
|
|
| 2026-05-05 |
Recalled from Jacksonville (AAA).
|
|
| 2026-03-08 |
Optioned to Jacksonville (AAA).
|
|
| 2025-11-18 |
Contract purchased from Jacksonville (AAA).
|
|
| 2025-01-15 |
Acquired from the San Francisco Giants.
|
The Miami Marlins acquired pitcher William Kempner from the San Francisco Giants for international bonus pool money. |