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 4 months

Joins 40-man roster.
The Marlins selected Kempner's contract from Triple-A Jacksonville.
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
2/26/2026
T0 - 0
0
1.0
0.00
0
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0.00
9.00
3.0
2/23/2026
T0 - 0
0
1.0
0.00
0
0
0
0
0
0
0
0
2
1
1
0
0
0
0
0
1.00
18.00
0.0
0
2.0
0.00
0
0
0
1
0
0
0
0
3
1
1
0
0
0
0
0
0.50
13.50
3.0
Date
Visit.
Home
Time
3/2/2026
1:05 PM
3/5/2026
1:10 PM
3/6/2026
7:10 PM
3/7/2026
12:05 PM
3/8/2026
1:10 PM
3/9/2026
6:10 PM
3/10/2026
1:10 PM
3/11/2026
1:10 PM
3/13/2026
6:10 PM
3/14/2026
12:05 PM
Pages:
1 2 >>
Player
Pos
City
Transaction date
Description
P
MIA
11/18/2025
Joins 40-man roster.

Stars of the month

Date
Player
City
Pos
Star
February 23, 2026
MIA
P
NA
February 26, 2026
MIA
P
NA
 

Stars of the week

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