William Kempner

Pitcher for Miami
Age: 25, 222 lbs, 6'0"
Born: 6/18/2001, San Jose, CA, USA
Sal: N/A
This player is injured. Currently Injured

TRANSACTION REPORT 11 days

Out with elbow sprain.
The Marlins placed Kempner on the 15-day injured list Sunday due to a right elbow sprain.
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
7/11/2026
CLE
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
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@
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@
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
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
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@
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@
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
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
7/24/2026
7:10 PM
7/25/2026
4:10 PM
7/26/2026
1:40 PM
7/27/2026
6:40 PM
7/28/2026
6:40 PM
7/29/2026
12:10 PM
7/30/2026
7:10 PM
7/31/2026
7:10 PM
8/1/2026
4:10 PM
8/2/2026
1:40 PM
Pages:
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P
MIA
7/12/2026
Out with elbow sprain.
P
MIA
7/3/2026
Recalled from Triple-A.
P
MIA
6/16/2026
Returns to Triple-A.
P
MIA
5/30/2026
Recalled from Triple-A.
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.

Stars of the month

May 05, 2026
MIA
P
NA
May 30, 2026
MIA
P
NA
May 31, 2026
MIA
P
NA
June 05, 2026
MIA
P
NA
June 10, 2026
MIA
P
NA
June 15, 2026
MIA
P
NA
July 03, 2026
MIA
P
NA
July 09, 2026
MIA
P
NA
July 11, 2026
MIA
P
NA
 

Stars of the week

July 09, 2026
MIA
P
2nd star
July 11, 2026
MIA
P
2nd star
 
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