Armside

Mason Thompson

WSH · RHP · RP · Age 27

Season
2025
G/GS
14/0
IP
10.2
BF
60
xwOBA
.370
K%
18.3%
BB%
20.0%
CSW%
25.5%
Whiff%
21.6%
Barrel%
8.1%
FB Velo
94.9

Below the qualifying minimum; percentiles rank qualified players only.

Percentile profile, 2025 regular season.

Mason ThompsonPercentile profile · 2025 regular seasonAmong qualified pitchers · red is better, blue is worsexwOBA3.370xBA14.268xSLG19.448Avg EV6388.8HardHit%7037.8%Barrel%558.1%K%1818.3%BB%120.0%Whiff%2121.6%Chase%121.1%Armside · Data: MLB Advanced Media / Baseball Savant

Arsenal, 2025

Pitchⓘ#ⓘUsageⓘVeloⓘSpinⓘIVBⓘHBⓘWhiff%ⓘCSW%ⓘxwOBAⓘRVⓘRV/100ⓘ
Sinker SI9640.2%95.0219111.7-15.912.8%22.9%.378-2-2.1
Slider SL8033.5%84.92188-1.94.527.6%28.8%.3530-0.6
4-Seam Fastball FF4418.4%94.8220417.1-7.925.0%27.3%.3800-0.3

Pitch types with 25+ pitches; knuckle curves and slow curves shown as curveballs. Grey rates: under 405 pitches of the type (Savant’s qualifying line, 2.5 per team game).

Season by season

SeasonⓘTeamⓘAgeⓘGⓘGSⓘIPⓘBFⓘK%ⓘBB%ⓘK−BB%ⓘCSW%ⓘxwOBAⓘFB Veloⓘ
2021WSH2331024.212119.0%12.4%6.6%25.5%.33496.2
2022WSH2424024.210015.0%8.0%7.0%26.1%.30095.8
2023WSH2551054.024018.3%9.2%9.2%27.4%.32894.6
2025WSH2714010.26018.3%20.0%-1.7%25.5%.37094.9
Career——1200114.052117.9%10.9%6.9%26.5%.32995.3