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William Kempner
Pitcher
for
Miami
Age: 25,
222 lbs
,
6'0"
Born:
6/18/2001
,
San Jose, CA, USA
Sal:
N/A
Currently Injured
TRANSACTION REPORT
16 days
Moved to 60-day IL.
The Marlins transferred Kempner (elbow) to the 60-day injured list.
Seasons
Games
Upcoming
Injuries
Transactions
Honours
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
9
0
12.3
2.92
1
0
0
0
8
2
0
1
14
2
4
0
0
4
4
0
0.97
10.22
5.0
0.6
9
0
12.3
2.92
1
0
0
0
8
2
0
1
14
2
4
0
0
4
4
0
0.97
10.22
5.0
0.6
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
7/11/2026
CLE
L1 - 4
0
2.0
9.00
0
0
0
0
3
2
0
0
3
1
0
0
0
2
2
0
1.50
13.50
0.0
7/9/2026
SEA
W8 - 4
0
0.3
54.00
0
0
0
0
2
0
0
1
0
0
2
0
0
2
2
0
12.00
0.00
0.0
7/3/2026
ATH@
W12 - 5
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
6/15/2026
PHI@
L0 - 7
0
2.3
0.00
0
0
0
0
0
0
0
0
2
1
0
0
0
0
0
0
0.00
7.71
0.0
6/10/2026
AZ
W8 - 0
0
2.0
0.00
1
0
0
0
0
0
0
0
3
0
2
0
0
0
0
0
1.00
13.50
5.0
6/5/2026
TB
L0 - 6
0
1.3
0.00
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
0
0.75
6.75
0.0
5/31/2026
NYM@
L1 - 10
0
1.3
0.00
0
0
0
0
2
0
0
0
3
0
0
0
0
0
0
0
1.50
20.25
0.0
5/30/2026
NYM@
L1 - 6
0
1.0
0.00
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.00
0.00
0.0
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
12.3
7.00
1
0
0
0
8
2
0
1
14
2
4
0
0
4
4
0
1.86
8.86
5.0
Date
Visit.
Home
Time
9/8/2026
Mets
Marlins
6:40 PM
9/9/2026
Mets
Marlins
6:40 PM
9/11/2026
Dodgers
Marlins
7:10 PM
9/12/2026
Dodgers
Marlins
4:10 PM
9/13/2026
Dodgers
Marlins
1:40 PM
9/14/2026
Marlins
Diamondbacks
9:40 PM
9/15/2026
Marlins
Diamondbacks
9:40 PM
9/16/2026
Marlins
Diamondbacks
9:40 PM
9/18/2026
Marlins
Padres
9:40 PM
9/19/2026
Marlins
Padres
8:40 PM
Pages:
1
2
>>
Player
Pos
City
Injured date
Type
Description
+
William Kempner
P
MIA
8/12/2026
Surgery on tap
elbow
details
Player
Pos
City
Transaction date
Description
William Kempner
P
MIA
8/21/2026
Moved to 60-day IL.
William Kempner
P
MIA
7/12/2026
Out with elbow sprain.
William Kempner
P
MIA
7/3/2026
Recalled from Triple-A.
William Kempner
P
MIA
6/16/2026
Returns to Triple-A.
William Kempner
P
MIA
5/30/2026
Recalled from Triple-A.
William Kempner
P
MIA
5/6/2026
Sent back to minors.
William Kempner
P
MIA
5/5/2026
Recalled from Triple-A.
William Kempner
P
MIA
3/8/2026
Sent to Triple-A.
William Kempner
P
MIA
11/18/2025
Joins 40-man roster.
Player
Pos
City
Game Date
Corr. Date
Corr.
Description
Game log
Stars of the month
Date
Player
City
Pos
Star
May 05, 2026
William Kempner
MIA
P
NA
May 30, 2026
William Kempner
MIA
P
NA
May 31, 2026
William Kempner
MIA
P
NA
June 05, 2026
William Kempner
MIA
P
NA
June 10, 2026
William Kempner
MIA
P
NA
June 15, 2026
William Kempner
MIA
P
NA
July 03, 2026
William Kempner
MIA
P
NA
July 09, 2026
William Kempner
MIA
P
NA
July 11, 2026
William Kempner
MIA
P
NA
Stars of the week
Date
Player
City
Pos
Star
July 09, 2026
William Kempner
MIA
P
2nd star
July 11, 2026
William Kempner
MIA
P
2nd star
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