PoolExpert

William Kempner

Pitcher for Miami
Age: 24, 222 lbs, 6'0"
Born: 6/18/2001, San Jose, CA, USA
Sal: N/A
This player is either suspended, in the minors, in Europe, is playing on a school team, or is currently not playing with any team. Currently In the minors

TRANSACTION REPORT 20 days

Sent back to minors.
The Marlins optioned Kempner to Triple-A Jacksonville.
Seasons
City
GP
CG
IP
ERA
W
L
ShO
Sv
H
2B
3B
HR
SO
HB
BB
WP
Bk
R
ER
NH
WHIP
K/9
PPts
PPts/GP
2026
MIA
1
0
1.0
0.00
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0.00
9.00
0.0
0.0
1
0
1.0
0.00
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0.00
9.00
0.0
0.0
Date
Opp
Res
CG
IP
ERA
W
L
ShO
Sv
H
2B
3B
HR
SO
HB
BB
WP
Bk
R
ER
NH
WHIP
K/9
PPts
5/5/2026
BAL
L7 - 9
0
1.0
0.00
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0.00
9.00
0.0
0
1.0
0.00
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0.00
9.00
0.0
Date
Visit.
Home
Time
5/27/2026
1:07 PM
5/29/2026
7:10 PM
5/30/2026
4:10 PM
5/31/2026
1:40 PM
6/1/2026
6:45 PM
6/2/2026
6:45 PM
6/3/2026
1:05 PM
6/5/2026
7:10 PM
6/6/2026
4:10 PM
6/7/2026
1:40 PM
Pages:
1 2 >>
Player
Pos
City
Transaction date
Description
P
MIA
5/6/2026
Sent back to minors.
P
MIA
5/5/2026
Recalled from Triple-A.
P
MIA
3/8/2026
Sent to Triple-A.
P
MIA
11/18/2025
Joins 40-man roster.

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