Mason Thompson

Mason Thompson

28-Year-Old PitcherRP
Texas Rangers AAA
2026 Fantasy Outlook
There was no outlook written for Mason Thompson in 2026. Check out the latest news below for more on his current fantasy value.
Signed a minor-league contract with the Rangers in February of 2026.
Makes spring debut
PTexas Rangers  AAA
February 23, 2026
Thompson (biceps) struck out two batters in a perfect inning Friday in the Rangers' 7-3 loss to the Royals in Cactus League play.
Analysis
Thompson is attending Rangers camp as a non-roster invitee and appears to be fully healthy after missing the final week of the 2025 campaign when the Nationals placed him on the injured list due to right biceps tendinitis. The right-hander looks like a long shot to make the Rangers' Opening Day bullpen and will likely be assigned to Triple-A Round Rock before the end of camp.
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2025 MLB Game Log
2025
2024
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2021
2025 MLB Game Log
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2024 MLB Game Log
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2023 MLB Game Log
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2022 MLB Game Log
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2021 MLB Game Log
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Minor League Game Log
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Left/Right Pitching Splits
Since 2024
 
 
-16%
BAA vs RHP
2026
No Stats
2025
 
 
-16%
BAA vs RHP
2024
No Stats
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .368 27 6 8 7 4 1 0
Since 2024vs Right .310 33 5 4 9 1 0 1
2026vs Left 0 0 0 0 0 0 0 0
2026vs Right 0 0 0 0 0 0 0 0
2025vs Left .368 27 6 8 7 4 1 0
2025vs Right .310 33 5 4 9 1 0 1
2024vs Left 0 0 0 0 0 0 0 0
2024vs Right 0 0 0 0 0 0 0 0
Home/Away Pitching Splits
Since 2024
 
 
-37%
ERA at Home
2026
No Stats
2025
 
 
-37%
ERA at Home
2024
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 9.00 2.40 5.0 0 1 0 9.0 12.6 0.0
Since 2024Away 14.29 2.82 5.2 1 0 0 9.5 7.9 1.6
2026Home 0 0 0 0 0 0 0 0 0
2026Away 0 0 0 0 0 0 0 0 0
2025Home 9.00 2.40 5.0 0 1 0 9.0 12.6 0.0
2025Away 14.29 2.82 5.2 1 0 0 9.5 7.9 1.6
2024Home 0 0 0 0 0 0 0 0 0
2024Away 0 0 0 0 0 0 0 0 0
Minor League Left/Right Pitching Splits (AAA)
Since 2024
 
 
-57%
BAA vs LHP
2026
 
 
-47%
BAA vs LHP
2025
 
 
-66%
BAA vs LHP
2024
No Stats
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .167 35 9 3 5 2 0 1
Since 2024vs Right .387 37 6 5 12 1 0 1
2026vs Left .200 16 3 0 3 0 0 1
2026vs Right .375 10 2 2 3 0 0 0
2025vs Left .133 19 6 3 2 2 0 0
2025vs Right .391 27 4 3 9 1 0 1
2024vs Left 0 0 0 0 0 0 0 0
2024vs Right 0 0 0 0 0 0 0 0
Prospect Rankings History
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2017 Fantasy Outlook
Tommy John surgery in his junior year of high school dropped Thompson to the third round of the 2016 first-year player draft, when the Padres took a gamble on the 19-year-old and swayed him from a Texas commitment with $1.75 million. Thompson has some work to do to fill out his 6-foot-7, 186-pound frame, but he has the stuff to succeed if he can do so. He posts good velocity and has some decent backup pitches, which he showed off in 12 innings for the Padres' rookie league team in the Arizona League. Thompson struck out 12 batters in his five starts, allowing just eight hits en route to a 2.25 ERA and 1.08 WHIP. He'll begin next season in a low minor league level, but the Padres will have high hopes for his success if he can stay healthy and begin to add more strength.
More Fantasy News
Gets MiLB contract from Texas
PTexas Rangers  AAA
Biceps
February 4, 2026
The Rangers signed Thompson (biceps) to a minor-league contract Tuesday.
Analysis
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Enters free agency
PFree Agent  AAA
Biceps
October 29, 2025
Thompson (biceps) cleared waivers Wednesday and elected free agency.
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Shelved with biceps tendinitis
PWashington Nationals  AAA
Biceps
September 23, 2025
The Nationals placed Thompson on the 15-day injured list Tuesday with right biceps tendinitis.
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Back up with big club
PWashington Nationals  AAA
August 30, 2025
The Nationals recalled Thompson from Triple-A Rochester on Saturday.
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Moves down to Triple-A
PWashington Nationals  AAA
July 22, 2025
The Nationals optioned Thompson to Triple-A Rochester on Tuesday.
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Latest Fantasy Rumors
Out of high-leverage mix?
PWashington Nationals  AAA
May 23, 2023
Thompson delivered a scoreless inning during Tuesday's 7-4 loss to San Diego, but Mark Zuckerman of MASNSports.com speculated the right-hander is no longer a trusted high-leverage option for manager Dave Martinez.
Analysis
Thompson's entered Tuesday's contest having been scored upon in each of his previous five outings, so it's not a major surprise he's fallen out of favor a bit. The 25-year-old had a 1.80 ERA, 0.70 WHIP and 19:1 K:BB across his first 20 innings of the season, and a return to that form could see him once again become a high-leverage option, though he's unlikely to be in the mix for saves without multiple injuries within the Nationals bullpen.
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