Mason Thompson #22
Round Rock Express
Triple-A Affiliate
- P
- B/T: R/R
- 6' 6"/241
- Age: 28
- Mason Lane Thompson
- Status: Active
- Born: 2/20/1998 in Round Rock, TX
- Draft: 2016, San Diego Padres, Round: 3, Overall Pick: 85
- High School: Round Rock, Round Rock, TX
- MLB Debut: 6/22/2021
2026 Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 4 | 0-1 | 8.10 | 3.1 | 3 | 1.80 |
2021 Stats
| AB | AVG | HR | RBI | SB | OPS |
|---|---|---|---|---|---|
| 0 | .000 | 0 | 0 | 0 | .000 |
MiLB Career Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 101 | 11-26 | 5.17 | 224.2 | 235 | 1.43 |
MLB Career Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 120 | 7-9 | 5.21 | 114.0 | 93 | 1.64 |
MiLB Career Stats
| AB | AVG | HR | RBI | SB | OPS |
|---|---|---|---|---|---|
| 0 | .000 | 0 | 0 | 0 | .000 |
MLB Career Stats
| AB | AVG | HR | RBI | SB | OPS |
|---|---|---|---|---|---|
| 0 | .000 | 0 | 0 | 0 | .000 |
| Year | AB | R | H | HR | RBI | SB | AVG | OBP | OPS |
|---|---|---|---|---|---|---|---|---|---|
| 2021 MLB Stats | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 |
| MiLB Career Stats | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 |
| MLB Career Stats | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 |
| Year | W | L | ERA | G | GS | SV | IP | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|
| 2026 MiLB Stats | 0 | 1 | 8.10 | 4 | 0 | 0 | 3.1 | 3 | 1.80 |
| MiLB Career Stats | 11 | 26 | 5.17 | 101 | 45 | 7 | 224.2 | 235 | 1.43 |
| MLB Career Stats | 7 | 9 | 5.21 | 120 | 0 | 2 | 114.0 | 93 | 1.64 |
- Next RR Game: 4-07 @ OKC
Latest Transactions
| Team | Date | Transaction |
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April 1, 2026 | RHP Mason Thompson assigned to Round Rock Express from Frisco RoughRiders. |
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March 31, 2026 | RHP Mason Thompson assigned to Frisco RoughRiders from Round Rock Express. |
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February 20, 2026 | RHP Mason Thompson assigned to Texas Rangers. |
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February 4, 2026 | RHP Mason Thompson assigned to Round Rock Express. |
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February 3, 2026 | Texas Rangers signed free agent RHP Mason Thompson to a minor league contract. |
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October 29, 2025 | RHP Mason Thompson elected free agency. |
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October 29, 2025 | Washington Nationals sent RHP Mason Thompson outright to Rochester Red Wings. |
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September 29, 2025 | Washington Nationals activated RHP Mason Thompson from the 15-day injured list. |
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September 23, 2025 | Washington Nationals placed RHP Mason Thompson on the 15-day injured list retroactive to September 20, 2025. Right biceps tendinitis. |
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August 30, 2025 | Washington Nationals recalled RHP Mason Thompson from Rochester Red Wings. |
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July 22, 2025 | Washington Nationals optioned RHP Mason Thompson to Rochester Red Wings. |
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July 5, 2025 | Washington Nationals activated RHP Mason Thompson from the 60-day injured list. |
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July 2, 2025 | Washington Nationals sent RHP Mason Thompson on a rehab assignment to Rochester Red Wings. |
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June 18, 2025 | Washington Nationals sent RHP Mason Thompson on a rehab assignment to Harrisburg Senators. |
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June 14, 2025 | Washington Nationals sent RHP Mason Thompson on a rehab assignment to FCL Nationals. |
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November 4, 2024 | Washington Nationals activated RHP Mason Thompson from the 60-day injured list. |
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November 4, 2024 | Washington Nationals placed RHP Mason Thompson on the 60-day injured list. |
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October 2, 2023 | Washington Nationals recalled RHP Mason Thompson from Rochester Red Wings. |
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September 13, 2023 | Washington Nationals optioned RHP Mason Thompson to Rochester Red Wings. |
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August 20, 2023 | Washington Nationals activated RHP Mason Thompson from the 15-day injured list. |
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August 17, 2023 | Washington Nationals sent RHP Mason Thompson on a rehab assignment to Harrisburg Senators. |
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August 5, 2023 | Washington Nationals placed RHP Mason Thompson on the 15-day injured list retroactive to August 2, 2023. Left knee contusion. |
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September 1, 2022 | Washington Nationals recalled RHP Mason Thompson, and from Rochester Red Wings. |
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August 10, 2022 | Rochester Red Wings activated RHP Mason Thompson. |
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August 10, 2022 | Washington Nationals optioned RHP Mason Thompson to Rochester Red Wings. |
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August 7, 2022 | Washington Nationals recalled RHP Mason Thompson from Rochester Red Wings. |
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July 14, 2022 | Rochester Red Wings activated RHP Mason Thompson. |
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July 14, 2022 | Washington Nationals optioned RHP Mason Thompson to Rochester Red Wings. |
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July 1, 2022 | Washington Nationals activated RHP Mason Thompson. |
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June 22, 2022 | Washington Nationals sent RHP Mason Thompson on a rehab assignment to Rochester Red Wings. |
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June 13, 2022 | Washington Nationals sent RHP Mason Thompson on a rehab assignment to FCL Nationals. |
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May 10, 2022 | Washington Nationals transferred RHP Mason Thompson from the 10-day injured list to the 60-day injured list. |
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April 10, 2022 | Washington Nationals placed RHP Mason Thompson on the 10-day injured list. Right biceps strain. |
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July 31, 2021 | Washington Nationals activated RHP Mason Thompson. |
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July 30, 2021 | Washington Nationals traded RHP Daniel Hudson to San Diego Padres for RHP Mason Thompson. |
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July 30, 2021 | RHP Mason Thompson assigned to Rochester Red Wings. |
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July 4, 2021 | San Diego Padres optioned RHP Mason Thompson to El Paso Chihuahuas. |
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June 20, 2021 | San Diego Padres recalled RHP Mason Thompson from El Paso Chihuahuas. |
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May 3, 2021 | RHP Mason Thompson assigned to El Paso Chihuahuas from Padres Alternate Training Site. |
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March 16, 2021 | San Diego Padres optioned P Mason Thompson to El Paso Chihuahuas. |
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November 20, 2020 | San Diego Padres selected the contract of RHP Mason Thompson from Lake Elsinore Storm. |
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September 27, 2019 | RHP Mason Thompson assigned to San Diego Padres Futures. |
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September 27, 2019 | RHP Mason Thompson assigned to San Diego Padres Futures. |
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September 16, 2019 | Lake Elsinore Storm activated RHP Mason Thompson from the 7-day injured list. |
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August 13, 2019 | Lake Elsinore Storm placed RHP Mason Thompson on the 7-day injured list. |
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August 5, 2019 | Lake Elsinore Storm activated RHP Mason Thompson from the 7-day injured list. |
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July 27, 2019 | AZL Padres 1 sent RHP Mason Thompson on a rehab assignment to AZL Padres 2. |
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July 24, 2019 | Lake Elsinore Storm sent RHP Mason Thompson on a rehab assignment to AZL Padres 1. |
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May 2, 2019 | Lake Elsinore Storm placed RHP Mason Thompson on the 7-day injured list. |
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April 1, 2019 | RHP Mason Thompson assigned to Lake Elsinore Storm from Fort Wayne TinCaps. |
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August 13, 2018 | Fort Wayne TinCaps activated RHP Mason Thompson from the 7-day injured list. |
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July 20, 2018 | Fort Wayne TinCaps placed RHP Mason Thompson on the 7-day disabled list. Right triceps strain. |
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September 29, 2017 | RHP Mason Thompson assigned to San Diego Padres Futures. |
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September 29, 2017 | RHP Mason Thompson assigned to San Diego Padres Futures. |
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September 26, 2017 | Fort Wayne TinCaps activated RHP Mason Thompson from the 7-day disabled list. |
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July 28, 2017 | Fort Wayne TinCaps placed RHP Mason Thompson on the 7-day disabled list retroactive to July 26, 2017. |
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May 22, 2017 | RHP Mason Thompson assigned to Fort Wayne TinCaps from AZL Padres. |
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June 20, 2016 | RHP Mason Thompson assigned to AZL Padres. |
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June 20, 2016 | San Diego Padres signed RHP Mason Thompson. |
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