Mason Thompson
San Diego Padres 2021; Washington Nationals 2021–2023; Washington Nationals 2025
Percentile snapshot
No qualified season. This player never reached the qualification floor — 3.1 plate appearances, or one inning, per game his team played — in any archived season, so there is no season population to rank him inside.
Career, era-adjusted
sWAR measured against every career in history, 24,011 of them. Only era-adjusted career stats carry a percentile — a raw career total gets a rank instead, because pooling the 1890s with the 2020s is a choice, not a measurement.
Season by season
Batting
| Season | G | PA | AB | R | H | 2B | 3B | HR | RBI | BB | SO | SB | CS | BA | OBP | SLG | OPS | wRC+ | OPS+ | wOBA | sWAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — | — | — | — | 0.3 |
| 2022 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — | — | — | — | 0.6 |
| 2023 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — | — | — | — | -0.1 |
| 2025 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | — | — | — | — | — | — | — | -0.8 |
Pitching
| Season | G | GS | W | L | SV | CG | SHO | H | ER | BB | SO | HR | IP | ERA | WHIP | K/9 | FIP | FIP- | ERA+ | sWAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 | 31 | 0 | 1 | 3 | 0 | 0 | 0 | 32 | 11 | 15 | 23 | 4 | 24.7 | 4.01 | 1.905 | 8.39 | 5.32 | 129.7 | 102.0 | 0.3 |
| 2022 | 24 | 0 | 1 | 1 | 1 | 0 | 0 | 19 | 8 | 9 | 15 | 2 | 24.7 | 2.92 | 1.135 | 5.47 | 4.23 | 104.8 | 138.2 | 0.6 |
| 2023 | 51 | 0 | 4 | 4 | 1 | 0 | 0 | 62 | 33 | 22 | 44 | 4 | 54.0 | 5.50 | 1.556 | 7.33 | 4.04 | 90.8 | 80.9 | -0.1 |
| 2025 | 14 | 0 | 1 | 1 | 0 | 0 | 0 | 16 | 14 | 12 | 11 | 1 | 10.7 | 11.81 | 2.625 | 9.28 | 5.75 | 133.4 | 36.5 | -0.8 |
sWAR is the season TOTAL for a player who both hit and pitched: the record book carries one figure per season, not a split, so the same number appears on both lines rather than being counted twice.
Career totals
Batting
Pitching
A total is called out only where it ranks in the all-time top 500; hover a figure for its rank and the size of the field it was ranked in. Ranks are absolute facts and carry no percentile — the population for "career home runs" would be an editorial choice, and the rank is not.
Best games
Batting
| Date | Game | AB | R | H | 2B | 3B | HR | RBI | BB | TB |
|---|---|---|---|---|---|---|---|---|---|---|
| 2021-06-22 | LAD @ SD Gameday | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2021-06-25 | AZ @ SD Gameday | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2021-06-26 | AZ @ SD Gameday | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2021-07-01 | SD @ CIN Gameday | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2021-08-02 | PHI @ WSH Gameday | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Pitching
| Date | Game | IP | H | R | ER | BB | SO | HR |
|---|---|---|---|---|---|---|---|---|
| 2023-04-25 | WSH @ NYM Gameday | 3.0 | 1 | 0 | 0 | 0 | 4 | 0 |
| 2023-04-22 | WSH @ MIN Gameday | 2.1 | 2 | 1 | 0 | 0 | 4 | 0 |
| 2023-03-30 | ATL @ WSH Gameday | 2.0 | 1 | 0 | 0 | 0 | 3 | 0 |
| 2023-04-06 | WSH @ COL Gameday | 2.0 | 1 | 0 | 0 | 0 | 3 | 0 |
| 2023-06-24 | WSH @ SD Gameday | 1.2 | 0 | 0 | 0 | 0 | 3 | 0 |
Ranked from our own play-by-play game log, which begins in 1901 — not from the record book, so a career played outside it shows nothing here rather than a short list.