Mason Thompson - MLB News, Rumors, & Updates

Makes spring debut Thompson (biceps) struck out two batters in a perfect inning Friday in the Rangers' 7-3 loss to the Royals in Cactus League play.

Impact 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.

1 DAY AGO • ROTOWIRE

Gets MiLB contract from Texas The Rangers signed Thompson (biceps) to a minor-league contract Tuesday.

Impact Thompson permitted 14 earned runs over just 10.2 innings last season for the Nationals and also had a 6.61 ERA in the minors in his first year back from Tommy John surgery. He ended the 2025 campaign on the injured list with biceps tendinitis and it's unclear whether he'll have any restrictions at the beginning of spring training.

FEBRUARY 4 • ROTOWIRE

Enters free agency Thompson (biceps) cleared waivers Wednesday and elected free agency.

Impact Thompson appeared in 14 games for the Nationals this year, giving up 14 earned runs over just 10.2 innings. He ended the regular season on the injured list with biceps tendinitis, though he is expected to be fully recovered by the time spring training begins. His next gig will likely come in the form of a minor-league contract.

OCTOBER 29, 2025 • ROTOWIRE

Nationals and White Sox meet in series rubber match

The Washington Nationals and Chicago White Sox play on Sunday with the winner claiming the three-game series

SEPTEMBER 28, 2025 • Associated Press

Nationals meet the White Sox after Garcia's 3-home run game

The Washington Nationals take on the Chicago White Sox after Luis Garcia hit three home runs on Friday in a 10-9 loss to the White Sox

SEPTEMBER 27, 2025 • Associated Press

White Sox aim to break road losing streak, play the Nationals

The Chicago White Sox hit the road against the Washington Nationals looking to end a six-game road slide

SEPTEMBER 26, 2025 • Associated Press

Braves look to keep home win streak alive, host the Nationals

The Atlanta Braves, on a three-game home winning streak, host the Washington Nationals

SEPTEMBER 24, 2025 • Associated Press

Shelved with biceps tendinitis The Nationals placed Thompson on the 15-day injured list Tuesday with right biceps tendinitis.

Impact The injury will end Thompson's season, though he should have a normal offseason, barring any setbacks. Thompson struggled mightily in 10.2 innings out of the Nationals' bullpen in 2025, finishing with an 11.81 ERA and 11:21 K:BB.

SEPTEMBER 23, 2025 • ROTOWIRE

Sale sparkles, Olson hits bases-loaded triple in 10th and Braves beat Nationals 5-0

Chris Sale struck out nine while allowing three hits over eight innings, and Matt Olson hit a bases-loaded triple in the 10th to lead the Atlanta Braves over the Washington Nationa...

SEPTEMBER 17, 2025 • Associated Press

Josh Bell homers as Nationals rally with 5 in the 9th to beat Cubs 6-3

Pinch-hitter Josh Bell hit a three-run homer and the Washington Nationals rallied with five runs in the ninth inning off Cubs closer Daniel Palencia to stun Chicago 6-3 on Sunday

SEPTEMBER 7, 2025 • Associated Press

MacKenzie Gore (left shoulder) heads to 15-day IL The Nationals on Saturday placed All-Star southpaw MacKenzie Gore on the 15-day injured list, retroactive to Wednesday, with left shoulder i...

AUGUST 30, 2025 • MLB.COM

Back up with big club The Nationals recalled Thompson from Triple-A Rochester on Saturday.

Impact Thompson struggled in his first stint with the Nationals this season, posting a 13.50 ERA, 3.00 WHIP and 3:6 K:BB over four innings spanning six relief appearances in July. However, he'll get another look in the majors in a corresponding move to MacKenzie Gore landing on the 15-day IL due to left shoulder inflammation. Thompson will likely serve in a low-leverage role out of the bullpen while up with Washington.

AUGUST 30, 2025 • ROTOWIRE

Optioned to Triple-A The Nationals optioned Thompson to Triple-A Rochester on Tuesday.

Impact In his first six relief appearances since coming back from Tommy John surgery, Thompson has been tagged for six runs with a 3:6 K:BB over four innings. He will try to get back on track at Rochester.

JULY 22, 2025 • ROTOWIRE

Thompson returns to Nats after 2nd TJ; Brzykcy optioned to Triple-A WASHINGTON -- For the third straight day, the Nationals made some pregame roster moves, activating right-hander Mason Thompson from the 60-d...

JULY 5, 2025 • MLB.COM

Back from injured list The Nationals reinstated Thompson (elbow) from the injured list Saturday.

Impact Thompson has spent the entire season working his way back from a Tommy John procedure he underwent in March 2024. He gave up six earned runs over eight frames during his rehab assignment, though he went unscored upon in 1.1 innings at Triple-A Rochester. Now fully healthy, he'll replace Zach Brzykcy in Washington's bullpen and take Derek Law's (forearm) place on the 40-man.

JULY 5, 2025 • ROTOWIRE

Back from injured list The Nationals reinstated Thompson (elbow) from the injured list Saturday.

Impact Thompson has spent the entire season working his way back from a Tommy John procedure he underwent in March 2024. He gave up six earned runs over eight frames during his rehab assignment, though he threw 1.1 scoreless innings at Triple-A Rochester. Now fully healthy, he'll replace Zach Brzykcy in Washington's bullpen and take Derek Law's (forearm) place on the 40-man.

JULY 5, 2025 • ROTOWIRE

Nationals play the Red Sox after Wood's 5-hit game

The Washington Nationals take on the Boston Red Sox after James Wood had five hits against the Tigers on Thursday

JULY 4, 2025 • Associated Press

Nationals square off against the Tigers with series tied 1-1

Both the Washington Nationals and the Detroit Tigers are looking for a series win with a victory on Thursday

JULY 3, 2025 • Associated Press

Nationals host the Tigers to begin 3-game series

The Washington Nationals begin a three-game series at home against the Detroit Tigers on Tuesday

JULY 1, 2025 • Associated Press

Angels take on the Nationals in series rubber match

Both the Los Angeles Angels and the Washington Nationals are looking for a series win with a victory on Sunday

JUNE 29, 2025 • Associated Press

Washington Nationals and Los Angeles Angels meet in game 2 of series

The Washington Nationals bring a 1-0 lead into the next game of the series against the Los Angeles Angels

JUNE 28, 2025 • Associated Press

Angels host the Nationals on home winning streak

The Los Angeles Angels host the Washington Nationals aiming to extend a three-game home winning streak

JUNE 27, 2025 • Associated Press

Padres and Nationals meet with series tied 1-1

The San Diego Padres and Washington Nationals play on Wednesday with the winner claiming the three-game series

JUNE 25, 2025 • Associated Press

Nationals play the Padres leading series 1-0

The Washington Nationals play the San Diego Padres with a 1-0 series lead

JUNE 24, 2025 • Associated Press

Padres take on the Nationals in first of 3-game series

The San Diego Padres start a three-game series at home against the Washington Nationals on Monday

JUNE 23, 2025 • Associated Press

MASON THOMPSON NEWS

NEWS

BIO

STATS

VIDEOS

GAME LOG

INJURIES