Mason Thompson

WAS Nationals • #0 • Reliever

Active
Position Reliever
Height 6'6"
Weight 241
Age 27
Birthdate Feb 20, 1998
Birthplace Round Rock, TX, USA
School Round Rock (TX)
Draft 2016 Round 3 (8 overall) by Washington

Mason Thompson Projections, Player Props and Stats

Strikeouts Thrown

0.79 / game
(2025) avg
Date Opponent K Close
Sep 19 @ NYM NYM 2 -
Sep 16 vs ATL ATL 1 -
Sep 14 vs PIT PIT 1 -
Sep 11 @ MIA MIA 1 -
Sep 10 @ MIA MIA 0 -
Sep 7 @ CHC CHC 1 -
Sep 3 vs MIA MIA 1 -
Aug 30 vs TB TB 1 -
Jul 21 vs CIN CIN 0 -
Jul 18 vs SD SD 0 -
Last 10 average 0.8

Outs Recorded

2.29 / game
(2025) avg
Date Opponent Outs Close
Sep 19 @ NYM NYM 3 -
Sep 16 vs ATL ATL 1 -
Sep 14 vs PIT PIT 3 -
Sep 11 @ MIA MIA 3 -
Sep 10 @ MIA MIA 1 -
Sep 7 @ CHC CHC 3 -
Sep 3 vs MIA MIA 3 -
Aug 30 vs TB TB 3 -
Jul 21 vs CIN CIN 1 -
Jul 18 vs SD SD 2 -
Last 10 average 2.3

To Record A Win

1
(2025) total wins
Date Opponent Wins Close
Sep 19 @ NYM NYM - -
Sep 16 vs ATL ATL - -
Sep 14 vs PIT PIT - -
Sep 11 @ MIA MIA - -
Sep 10 @ MIA MIA - -
Sep 7 @ CHC CHC W -
Sep 3 vs MIA MIA - -
Aug 30 vs TB TB - -
Jul 21 vs CIN CIN - -
Jul 18 vs SD SD - -
Wins in last 10 1

Hits Allowed

1.14 / game
(2025) avg
Date Opponent Hits Close
Sep 19 @ NYM NYM 2 -
Sep 16 vs ATL ATL 3 -
Sep 14 vs PIT PIT 0 -
Sep 11 @ MIA MIA 1 -
Sep 10 @ MIA MIA 1 -
Sep 7 @ CHC CHC 2 -
Sep 3 vs MIA MIA 1 -
Aug 30 vs TB TB 0 -
Jul 21 vs CIN CIN 0 -
Jul 18 vs SD SD 0 -
Last 10 average 1.0

Walks Given

0.71 / game
(2025) avg
Date Opponent W Close
Sep 19 @ NYM NYM 2 -
Sep 16 vs ATL ATL 1 -
Sep 14 vs PIT PIT 1 -
Sep 11 @ MIA MIA 0 -
Sep 10 @ MIA MIA 0 -
Sep 7 @ CHC CHC 0 -
Sep 3 vs MIA MIA 1 -
Aug 30 vs TB TB 0 -
Jul 21 vs CIN CIN 2 -
Jul 18 vs SD SD 1 -
Last 10 average 0.8

Earned Runs Allowed

1.0 / game
(2025) avg
Date Opponent E. Run Close
Sep 19 @ NYM NYM 3 -
Sep 16 vs ATL ATL 4 -
Sep 14 vs PIT PIT 0 -
Sep 11 @ MIA MIA 0 -
Sep 10 @ MIA MIA 0 -
Sep 7 @ CHC CHC 1 -
Sep 3 vs MIA MIA 0 -
Aug 30 vs TB TB 0 -
Jul 21 vs CIN CIN 1 -
Jul 18 vs SD SD 0 -
Last 10 average 0.9

Mason Thompson Game Logs

2025 Game Log
Date Opp Score M/L O/U S/R RES IP H R ER SO BB HR PIT P/IP G/F
Sep 19 @ NYM L 12 - 6 L 202 O 8.5 R ND 1.0 2 3 3 2 2 0 29 29.0 0.00
Sep 16 vs ATL L 5 - 0 F/10 L 158 U 7.0 R L 0.1 3 5 4 1 1 0 27 81.0 0.00
Sep 14 vs PIT W 4 - 3 W 106 U 8.5 R ND 1.0 0 0 0 1 1 0 17 17.0 0.00
Sep 11 @ MIA L 5 - 0 L 113 U 7.5 R ND 1.0 1 0 0 1 0 0 16 16.0 0.00
Sep 10 @ MIA L 8 - 3 L 132 O 8.5 R ND 0.1 1 0 0 0 0 0 7 21.0 0.00
Sep 7 @ CHC W 6 - 3 W 162 O 7.5 R W 1.0 2 1 1 1 0 1 15 15.0 0.00
Sep 3 vs MIA W 10 - 5 W 134 O 9.0 R ND 1.0 1 1 0 1 1 0 23 23.0 0.00
Aug 30 vs TB L 4 - 1 L 137 U 8.5 R ND 1.0 0 0 0 1 0 0 15 15.0 0.00
Jul 21 vs CIN W 10 - 8 W 111 O 9.0 R ND 0.1 0 1 1 0 2 0 12 36.0 0.00
Jul 18 vs SD L 7 - 2 L 130 O 8.5 R ND 0.2 0 0 0 0 1 0 15 22.5 0.00
Jul 13 @ MIL L 8 - 1 L 235 O 8.5 R ND 1.0 0 0 0 1 1 0 19 19.0 0.00
Jul 10 @ STL L 8 - 1 L 127 P 9.0 R ND 0.1 4 5 5 0 1 0 17 51.0 0.00
Jul 8 @ STL L 4 - 2 L 206 U 8.0 R ND 1.0 1 0 0 1 0 0 16 16.0 0.00
Jul 6 vs BOS L 6 - 4 L 210 O 8.5 R ND 0.2 1 0 0 1 0 0 11 16.5 0.00
Show Full Season

Mason Thompson's Pitching Statistics for Regular Season

Season Team G GS W L SV BS ERA CG SHO IP H R ER BB SO HR WP
2025 WAS 14 0 1 1 0 0 11.81 0 0 10.7 16 16 14 10 11 1 0
2023 WAS 51 0 4 4 1 3 5.50 0 0 54.0 62 35 33 22 44 4 4
2022 WAS 24 0 1 1 1 1 2.92 0 0 24.7 19 8 8 9 15 2 1
2021 WAS 27 0 1 3 0 3 4.15 0 0 21.7 28 14 10 13 21 4 1
2021 SD 4 0 0 0 0 0 3.00 0 0 3.0 4 1 1 1 2 0 2

Mason Thompson's Pitching Statistics for Post Season

Season Team G GS W L SV BS ERA CG SHO IP H R ER BB SO HR WP

Pitching Splits

Overall Last 3 Away Home Day Night
W-L 1-1 0-1 1-0 0-1 0-0 1-1
ERA 11.81 27.00 14.29 9.00 0.00 11.81
IP 10.7 2.3 5.7 5.0 0.0 10.7
HITS 16 5 11 5 0 16
RUNS 16 8 9 7 0 16
ER 14 7 9 5 0 14
SO 11 4 6 5 0 11
BB 10 4 4 6 0 10
HR 1 0 1 0 0 1
OBP .433 .529 .455 .407 .000 .433
WHIP 2.44 3.86 2.65 2.20 0.00 2.44
GB:FB 3.00 1.00 1.50 6.00 0.00 3.00
SB 3 1 1 2 0 3
CS 0 0 0 0 0 0
SB% 0.00 0.00 0.00 0.00 0.00 0.00
QS% 0.00 0.00 0.00 0.00 0.00 0.00


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