Trent Thornton - MLB News, Rumors, & Updates

Cubs agree to minor league contracts with outfielder Chas McCormick and reliever Trent Thornton

The Chicago Cubs have agreed to minor league contracts with outfielder Chas McCormick and reliever Trent Thornton that include invitations to major league camp for spring training

JANUARY 28 • Associated Press

Inks deal with Cubs The Cubs signed Thornton (Achilles) to a contract Monday, Tread Athletics reports.

Impact It's not clear whether it's a major- or minor-league contract, but Thornton has landed a deal after throwing for teams in a "Pro Day" at Tread Athletics training facility. Thornton had surgery in August to repair a torn left Achilles tendon but has a chance to be ready in time for Opening Day. The right-handed reliever posted a 4.68 ERA, 1.30 WHIP and 32:14 K:BB over 42.1 innings for the Mariners in 2025 before getting hurt.

JANUARY 19 • ROTOWIRE

Chicago Cubs Sign Righty Trent Thornton Trent Thornton is coming off a torn Achilles, but was a very effective reliever before that.

JANUARY 19 • BLEACHERNATION.COM

Non-tendered by Tridents The Mariners non-tendered Thornton on Friday, Daniel Kramer of MLB.com reports.

Impact Thornton's 2025 season came to an abrupt halt in late July after he tore a left Achilles tendon. Prior to the injury, Thornton posted five holds along with a 4.68 ERA, 1.30 WHIP and 32:14 K:BB across 42.1 innings while operating out of the bullpen. Thornton's expected timeline to recover was estimated as 6-to-8 weeks after undergoing surgery in August, which will impact his availability for spring training should he sign with a team.

NOVEMBER 22, 2025 • ROTOWIRE

Shifted to 60-day injured list The Mariners transferred Thornton (Achilles) from the 15-day injured list to the 60-day injured list Tuesday.

Impact The transaction frees up a spot on the 40-man roster for the addition of Sauryn Lao. Thornton is out for the season after tearing his left Achilles on July 31.

AUGUST 19, 2025 • ROTOWIRE

Facing 6-to-8-month recovery Thornton underwent season-ending surgery Monday to repair a torn left Achilles tendon and is expected to face a recovery timeline of 6-to-8 months, Daniel Kramer of MLB.com reports...

Impact Thornton suffered the Achilles injury during a July 30 relief appearance and finished the 2025 season with a 4.68 ERA, 1.30 WHIP and 32:14 K:BB over 42.1 innings. Given the timeline laid out by Seattle, Thornton's availability for the start of spring training will likely be affected, and the injury could prompt the Mariners to non-tender him this winter as he heads into his final season of arbitration in 2026.

AUGUST 10, 2025 • ROTOWIRE

Mariners says pitcher Bryce Miller, outfielder Victor Robles nearing return from injuries

Seattle Mariners starting pitcher Bryce Miller and outfielder Victor Robles are getting closer to returning from injuries

AUGUST 6, 2025 • Associated Press

Forgotten Mariners ace should be sought for a reunion after Cubs release Chris Flexen could be what the Mariners lost when Trent Thornton tore his Achilles.

AUGUST 5, 2025 • SODOMOJO.COM

Diagnosed with torn Achilles The Mariners placed Thornton on the 15-day injured list Friday with a torn left Achilles.

Impact Thornton left Thursday's game against the Rangers on a cart, and imaging confirmed Friday that the right-hander tore his Achilles tendon. The diagnosis will put an early end to his season, and he'll finish 2025 with a 4.68 ERA and 1.30 WHIP alongside a 32:14 K:BB through 42.1 innings. The 31-year-old will likely miss the vast majority of the 2026 season as well.

AUGUST 1, 2025 • ROTOWIRE

Mariners reliever Trent Thornton carted off field after injury coming off mound in 9th inning

Seattle reliever Trent Thornton was injured while coming off the mound on a ground ball in the ninth inning Thursday night and was carted off the field during the Mariners’ 6-0 win...

AUGUST 1, 2025 • Associated Press

Achilles injury feared Thornton (leg) was on crutches following Thursday's game against the Rangers, and he believed he suffered a serious Achilles injury, Daniel Kramer of MLB.com reports.

Impact Thornton was injured while trying to cover first base late in Thursday's game and appeared to suffer a serious leg injury. He is set for an MRI on Friday, at which time a diagnosis should become official.

AUGUST 1, 2025 • ROTOWIRE

Cal Raleigh hits 42nd HR, Cole Young also goes deep as Mariners beat Rangers 6-0

Cal Raleigh homered again, rooke Cole Young also went deep and George Kirby pitched six strong innings as the Seattle Mariners beat the Texas Rangers 6-0

AUGUST 1, 2025 • Associated Press

Carted off field after leg injury Thornton suffered a left leg injury Thursday against the Rangers and departed on a cart, Adam Jude of The Seattle Times reports.

Impact Thornton entered the game in the eighth inning and successfully recorded five outs. He then suffered what appeared to be a serious leg injury while trying to cover first base. Thornton will almost certainly need a stint on the injured list, but the issue could prove to keep him sidelined for additional time.

AUGUST 1, 2025 • ROTOWIRE

Settling in after rocky start Thornton threw a clean seventh inning in Saturday's 7-6 extra-innings win over the Astros. He struck out one.

Impact Although he has just five holds this season, Thornton is beginning to settle in following a dreadful start to the year that saw him hold a 7.71 ERA as of June 10. The right-hander has worked multiple innings for the Mariners in five of his last 11 outings, during which sports a 1.06 ERA, 0.82 WHIP and 14:7 K:BB covering 17 frames.

JULY 20, 2025 • ROTOWIRE

3 Mariners who'll survive on the roster past the trade deadline, but shouldn't Dylan Moore, Trent Thornton, and Jorge Polanco are three Mariners that would ideally be traded away but won't be given their recent performa...

JULY 13, 2025 • SODOMOJO.COM

3 Mariners who should be worried about their jobs ahead of MLB trade deadline With the MLB trade deadline approaching quickly, Dylan Moore, Trent Thornton and Ben Williamson might be the odd men out if the team upgrade...

JULY 13, 2025 • SODOMOJO.COM

Raleigh extends MLB lead with 33rd homer in Mariners' win over Royals

Cal Raleigh hit his major league-leading 33rd homer and Randy Arozarena connected twice as the Seattle Mariners beat the Kansas City Royals 6-2

JULY 1, 2025 • Associated Press

Mitch Garver and Mariners beat Rangers in 12 as all 3 games of series go extra innings

Mitch Garver hit a two-run homer in the 12th and drove in four runs, and the Seattle Mariners beat the Texas Rangers 6-4 to win a series in which all three games went to extra inni...

JUNE 29, 2025 • Associated Press

Sports play through another dangerously hot day in parts of the US

Several major league teams played through a second straight day of muggy conditions as dangerously hot temperatures dominated parts of the United States during a June heat wave

JUNE 22, 2025 • Associated Press

Reds star, Mariners pitcher, MLB umpire buckle under extreme heat Shortstop Elly De La Cruz vomits on field, while Mariners pitcher Trent Thornton, umpire Chad Whitson forced to exit as extreme heat hits ML...

JUNE 22, 2025 • USATODAY.COM

Should be fine after early exit Thornton threw 2.1 scoreless innings of relief before exiting Saturday's eventual 10-7 loss to the Cubs due to heat exhaustion per Daniel Kramer of MLB.com. He allowed one hit and...

Impact Thornton had to be helped off the field in the eighth inning, but he's not expected to require additional medical treatment away from the team. After throwing a season-high 51 pitches Saturday, Thornton figures to get a few days off before he's available out of Seattle's bullpen again anyway. The 31-year-old right-hander missed about a month of action due to appendicitis earlier this year, and he's mostly struggled with a 6.35 ERA, 1.50 WHIP and 17:10 K:BB over 22.2 innings.

JUNE 22, 2025 • ROTOWIRE

Reds' Elly De La Cruz and Mariners reliever Trent Thornton fall ill while playing in extreme heat

Cincinnati Reds shortstop Elly De La Cruz and Seattle Mariners reliever Trent Thornton got sick while playing in the extreme heat that covered much of the United States

JUNE 22, 2025 • Associated Press

Thornton 'should be OK' after heat bests him, Mariners at Wrigley CHICAGO -- Heat exhaustion was widespread throughout the Mariners’ 10-7 loss on Saturday afternoon to the Cubs, to the point where reliever...

JUNE 21, 2025 • MLB.COM

Reinstated from IL The Mariners reinstated Thornton (abdomen) from the 15-day injured list Saturday.

Impact Thornton landed on the 15-day injured list May 9 due to appendicitis, and it took three weeks for him to recover enough to embark on a rehab assignment with Triple-A Tacoma. He'll reclaim his spot in the Mariners' bullpen that was vacated by Casey Lawrence, who was designated for assignment in a corresponding move. Thornton posted a 5.87 ERA, 1.30 WHIP, five holds and an 11:4 K:BB across 15.1 innings prior to his stint on the IL.

JUNE 7, 2025 • ROTOWIRE

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Cubs agree to minor league contracts with outfielder Chas McCormick and reliever Trent Thornton

Mariners says pitcher Bryce Miller, outfielder Victor Robles nearing return from injuries

Mariners reliever Trent Thornton carted off field after injury coming off mound in 9th inning

Cal Raleigh hits 42nd HR, Cole Young also goes deep as Mariners beat Rangers 6-0

Raleigh extends MLB lead with 33rd homer in Mariners' win over Royals

Mitch Garver and Mariners beat Rangers in 12 as all 3 games of series go extra innings

Sports play through another dangerously hot day in parts of the US

Reds' Elly De La Cruz and Mariners reliever Trent Thornton fall ill while playing in extreme heat