PoolExpert

Mason Thompson

Starting pitcher for Washington
Age: 27, 241 lbs, 6'6"
Born: 2/20/1998, Round Rock, TX, USA
Sal: N/A
This player is injured. Currently Injured

TRANSACTION REPORT 1 month

Shelved with biceps tendinitis.
The Nationals placed Thompson on the 15-day injured list Tuesday with right biceps tendinitis.
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
2025
WSH
14
0
10.7
11.81
1
1
0
0
16
5
1
1
11
0
12
0
0
16
14
0
2.62
9.28
5.0
0.4
2023
WSH
51
0
54.0
5.50
4
4
0
1
62
10
2
4
44
4
22
4
0
35
33
0
1.56
7.33
23.0
0.5
2022
WSH
24
0
24.7
2.92
1
1
0
1
19
2
1
2
15
1
9
1
0
8
8
0
1.14
5.47
8.0
0.3
2021
WSH
31
0
24.7
4.01
1
3
0
0
32
5
0
4
23
1
15
3
0
15
11
0
1.91
8.39
5.0
0.2
120
0
114.0
6.06
7
9
0
2
129
22
4
11
93
6
58
8
0
74
66
0
1.81
7.62
41.0
0.3
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
9/19/2025
NYM@
L6 - 12
0
1.0
27.00
0
0
0
0
2
1
0
0
2
0
3
0
0
3
3
0
5.00
18.00
0.0
9/16/2025
ATL
L0 - 5
0
0.3
108.00
0
1
0
0
3
1
1
0
1
0
1
0
0
5
4
0
12.00
27.00
0.0
9/14/2025
PIT
W4 - 3
0
1.0
0.00
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
1.00
9.00
0.0
9/11/2025
MIA@
L0 - 5
0
1.0
0.00
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
0
1.00
9.00
0.0
9/10/2025
MIA@
L3 - 8
0
0.3
0.00
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
3.00
0.00
0.0
9/7/2025
CHC@
W6 - 3
0
1.0
9.00
1
0
0
0
2
0
0
1
1
0
0
0
0
1
1
0
2.00
9.00
5.0
9/3/2025
MIA
W10 - 5
0
1.0
0.00
0
0
0
0
1
1
0
0
1
0
1
0
0
1
0
0
2.00
9.00
0.0
8/30/2025
TB
L1 - 4
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
7/21/2025
CIN
W10 - 8
0
0.3
27.00
0
0
0
0
0
0
0
0
0
0
2
0
0
1
1
0
6.00
0.00
0.0
7/18/2025
SD
L2 - 7
0
0.7
0.00
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1.50
0.00
0.0
0
7.7
17.10
1
1
0
0
10
3
1
1
8
0
9
0
0
11
9
0
3.35
9.00
5.0
Pages:
1 2 3 4 5 6 7 8 9 10 >> ... 11
Player
Pos
City
Injured date
Type
Description
+
SP
WSH
6/16/2025
Cleared for rehab assignment
elbow
details
SP
WSH
6/13/2025
Close to rehab assignment
elbow
details
SP
WSH
2/14/2025
Chance to be ready for Opening Day
elbow
details
SP
WSH
2/28/2024
Undergoing Tommy John surgery
elbow
details
SP
WSH
2/26/2024
Getting checked out this week
elbow
details
SP
WSH
2/14/2024
Shut down from throwing
elbow
details
SP
WSH
8/16/2023
Cleared for rehab assignment
knee
details
SP
WSH
8/15/2023
Throws simulated game
knee
details
SP
WSH
6/14/2022
Kicks off rehab assignment
Biceps
details
SP
WSH
6/11/2022
Throws live BP
Biceps
details
Pages:
1 2 >>
Player
Pos
City
Transaction date
Description
SP
WSH
9/23/2025
Shelved with biceps tendinitis.
SP
WSH
8/30/2025
Back up with big club.
SP
WSH
7/22/2025
Moves down to Triple-A.
SP
WSH
7/5/2025
Back from injured list.
SP
WSH
2/19/2025
Goes on 60-day injured list.
SP
WSH
11/21/2024
Agrees to deal with Nats.
SP
WSH
3/24/2024
Moves to 60-day IL.
SP
WSH
9/13/2023
Optioned to Rochester.
SP
WSH
8/20/2023
Returns from injured list.
SP
WSH
8/5/2023
Lands on injured list.
Pages:
1 2 3 >>
Player
Pos
City
Game Date
Corr. Date
Corr.
Description
SP
WSH
5/30/2023
6/16/2023
+1
Hits allowed
SP
WSH
5/30/2023
6/16/2023
+2
Earned runs allowed

Stars of the month

Date
Player
City
Pos
Star
July 06, 2025
WSH
SP
NA
July 08, 2025
WSH
SP
NA
July 10, 2025
WSH
SP
NA
July 13, 2025
WSH
SP
NA
July 18, 2025
WSH
SP
NA
July 21, 2025
WSH
SP
NA
August 30, 2025
WSH
SP
NA
September 03, 2025
WSH
SP
NA
September 07, 2025
WSH
SP
NA
September 10, 2025
WSH
SP
Rookie star
September 11, 2025
WSH
SP
NA
September 14, 2025
WSH
SP
NA
September 16, 2025
WSH
SP
NA
September 19, 2025
WSH
SP
NA
 

Stars of the week

Date
Player
City
Pos
Star
July 10, 2025
WSH
SP
NA
July 21, 2025
WSH
SP
1st star
September 07, 2025
WSH
SP
1st star
September 16, 2025
WSH
SP
Rookie star
September 19, 2025
WSH
SP
3rd star
 
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