Cooper Criswell - MLB News, Rumors, & Updates

Grabs three-inning save Criswell earned the save in Sunday's 8-0 win over the Guardians, allowing two hits while striking out five over three scoreless innings.

Impact Criswell was sharp Sunday, limiting the Guardians to a pair of singles to close out Seattle's shutout victory, earning his second career save. The 29-year-old Criswell made the team as a long-relief option after posting a 2.51 ERA across 14.1 innings in spring training. While he may have a defined role in the Mariners' bullpen, don't expect Criswell to be a frequent source of saves. The right-hander has a career ERA of 4.42 with a 1.42 WHIP across 158.2 major-league innings.

MARCH 30 • ROTOWIRE

Hancock tosses 6 no-hit innings, Donovan homers as Mariners beat Guardians 8-0

Emerson Hancock threw six hitless innings and Brendan Donovan launched a three-run homer as the Seattle Mariners beat the Cleveland Guardians 8-0 to earn a four-game split in their...

MARCH 30 • Associated Press

Mariners pitcher Emerson Hancock tosses 6 no-hit innings in 8-0 win over Guardians

Emerson Hancock pitched six hitless innings for the Seattle Mariners in his season debut against the Cleveland Guardians before being removed from the game by manager Dan Wilson

MARCH 30 • Associated Press

Guardians' Chase DeLauter homers in 1st regular-season at-bat

Cleveland Guardians rookie outfielder Chase DeLauter hit a home run in the first regular-season at-bat of his major league career

MARCH 27 • Associated Press

Could open season in rotation Criswell is competing for the final starting spot in Seattle's Opening Day rotation, per Daniel Kramer of MLB.com.

Impact With Bryce Miller (oblique) unlikely to be available by the start of the regular season, the Mariners' fifth rotation spot will likely come down to Criswell or Emerson Hancock. While Hancock is the early favorite for the job, the 29-year-old Criswell has added his name to the mix thanks to a strong spring. He's allowed just two runs on seven hits across 10.1 innings while striking out 10. Criswell spent most of the 2025 season in Triple-A, where he posted a 3.70 ERA across 65.2 innings. He did make 18 starts for the Red Sox in 2024, working to a 4.08 ERA with a 1.35 WHIP and 73 strikeouts across 99.1 innings. If Criswell doesn't crack the Opening Day rotation, he'll likely start the year as the long man in Seattle's bullpen.

MARCH 16 • ROTOWIRE

These Mariners can step up into Bryce Miller's void after latest injury setback With Bryce Miller unlikely to be ready for Opening Day, Emerson Hancock, Cooper Criswell and Dane Dunning could take his spot in the rotatio...

MARCH 12 • SODOMOJO.COM

Mariners' new spin artist is impressing the right people in spring training Cooper Criswell has posted solid numbers thus far in spring training, giving him a chance at taking a spot as a long man and emergency start...

MARCH 8 • SODOMOJO.COM

WATCH: Giants' Luis Matos drilled in helmet by Cooper Criswell's 87 MPH fastball in scary scene The San Francisco Giants played against the Seattle Mariners in the Cactus League on Wednesday.

MARCH 5 • SPORTSKEEDA.COM

Newest Mariners pitcher is a textbook example of a mop-up guy New trade acquisition Cooper Criswell is set to be a mop-up guy but doesn't offer much else to the Mariners.

JANUARY 28 • SODOMOJO.COM

Mariners acquire swingman Cooper Criswell in trade with Mets The Seattle Mariners have yet to make a blockbuster deal on the back end of the offseason, but they've certainly added a lot of depth headin...

JANUARY 24 • SI.COM

Mariners trade for swingman Criswell to boost pitching depth The Mariners added to their pitching depth on Friday, acquiring right-handed swingman Cooper Criswell from the Mets for cash. Criswell, 29,...

JANUARY 24 • MLB.COM

Mariners acquire right-hander Cooper Criswell from Mets for cash

The Seattle Mariners acquired right-hander Cooper Criswell from the New York Mets on Friday for cash, and designated left-hander Jhonathan Diaz for assignment

JANUARY 24 • Associated Press

Bound for Seattle The Mets traded Criswell to the Mariners on Friday in exchange for cash, Jorge Castillo of ESPN.com reports.

Impact The 29-year-old was DFA'd by the Mets on Wednesday following the team's acquisition of Freddy Peralta and Tobias Myers, but Criswell will recapture a 40-man spot upon moving to Seattle. He posted a 3.57 ERA and 1.58 WHIP in 17.2 regular-season innings with the Red Sox in 2025 and will compete for a spot in the Mariners' bullpen during spring training.

JANUARY 23 • ROTOWIRE

DFA'd by Mets The Mets designated Criswell for assignment Wednesday, Anthony DiComo of MLB.com reports.

Impact Criswell will end up as the roster casualty necessary to create space on the Mets' 40-man following the acquisition of Freddy Peralta and Tobias Myers from Milwaukee on Wednesday. Criswell made seven regular-season appearances with the Red Sox last year, during which he logged a 3.57 ERA and 1.58 WHIP across 17.2 innings. If he passes through waivers unclaimed, he will likely spend the majority of 2026 at Triple-A Syracuse with a chance to make an occasional appearance in the majors.

JANUARY 22 • ROTOWIRE

Mets acquire ace pitcher Freddy Peralta from Brewers in trade

The active New York Mets have acquired ace pitcher Freddy Peralta and right-hander Tobias Myers from Milwaukee in a trade that sent two top prospects to the Brewers: pitcher Brando...

JANUARY 22 • Associated Press

Mets Swoop In To Claim DFA'd Red Sox Right-Hander Less than 24 hours after he was designated for assignment by the Boston Red Sox, Cooper Criswell was snatched up by the Mets.

DECEMBER 5, 2025 • NESN.COM

Claimed off waivers by Mets The Mets claimed Criswell off waivers from the Red Sox on Friday, Jorge Castillo of ESPN.com reports.

Impact Criswell had been designated for assignment following Boston's five-player trade with Pittsburgh on Thursday. The 29-year-old has been a useful swingman for the Red Sox the last two seasons, holding a 4.00 ERA and 82:36 K:BB over 117 innings covering 19 starts and 14 relief appearances. Criswell does not have minor-league options remaining but is not yet arbitration-eligible, so the Mets will have several years of control of the righty.

DECEMBER 5, 2025 • ROTOWIRE

Red Sox Acquire RHP Johan Oviedo from Pirates in 5-Player Trade

The Boston Red Sox have acquired right-hander Johan Oviedo from the Pittsburgh Pirates as part of a five-player trade.

DECEMBER 5, 2025 • FOX SPORTS

Red Sox Acquire RHP Johan Oviedo from Pirates in 5-Player Trade

Designated for assignment The Red Sox designated Criswell for assignment Thursday, Chris Cotillo of MassLive.com reports.

Impact The Red Sox re-signed Criswell to a one-year contract in early November, but he'll lose his roster spot less than one month later. He spent the majority of the 2025 season with Triple-A Worcester and should have the chance to contribute as a reliever at some point in 2026 if he sticks with the organization.

DECEMBER 5, 2025 • ROTOWIRE

Re-signs with BoSox Criswell signed a one-year, $800,000 contract with the Red Sox on Thursday, Robert Murray of FanSided.com reports.

Impact Criswell appeared in seven games for Boston in 2025, finishing the regular season with a 3.57 ERA and 1.58 WHIP through 17.2 innings. He put up similar numbers at Triple-A Worcester (3.70 ERA, 1.35 WHIP) before elbow inflammation put an early end to his season in late August. The 29-year-old righty doesn't have any more minor-league options remaining, so he will have to make the Red Sox's Opening Day roster to avoid losing his 40-man spot.

NOVEMBER 6, 2025 • ROTOWIRE

Placed on IL at Triple-A Criswell was placed on the 7-day injured list by Triple-A Worcester on Wednesday due to right elbow inflammation, Chris Cotillo of MassLive.com reports.

Impact Criswell has spent most of the 2025 season at Triple-A but has appeared in seven games (one start) with the Red Sox, logging a 3.57 ERA, 1.59 WHIP and 9:5 K:BB across 17.2 innings of work. He owns a 4-2 record, 3.70 ERA, 1.34 WHIP and 68:28 K:BB across 65.2 innings at Triple-A and will now be unavailable for at least the next week.

AUGUST 21, 2025 • ROTOWIRE

Placed on IL at Triple-A Criswell was placed on the 7-day injured list by Triple-A Worcester on Wednesday due to right elbow inflammation, Chris Cotillo of MassLive.com reports.

AUGUST 21, 2025 • ROTOWIRE

Dispatched to Triple-A The Red Sox optioned Criswell to Triple-A Worcester on Saturday.

Impact Criswell fired seven innings of one-run ball Friday against the Astros, but he'll end up as the roster casualty necessary to make room for Dustin May in Boston's rotation. Criswell sports a 3.57 ERA through 17.2 innings with the Red Sox this season and would likely be the next man up if any of Boston's starters need to miss time down the stretch.

AUGUST 2, 2025 • ROTOWIRE

Goes seven strong in spot start Criswell did not factor into the decision in Friday's 2-1 extra-inning win over the Astros, allowing one run on seven hits and two walks with four strikeouts over seven innings.

Impact Criswell allowed just a solo homer in the second inning and otherwise kept the Astros in check, needing only 84 pitches to complete seven strong frames in his first start and seventh major-league appearance of the season. The 29-year-old now owns a 3.57 ERA, 1.58 WHIP and 9:5 K:BB across 17.2 innings with the Red Sox, though Friday's outing was likely just a spot start with Dustin May in line to take the fifth spot in the team's rotation.

AUGUST 2, 2025 • ROTOWIRE

Starting Friday vs. Astros Criswell will start Friday's game against the Astros, Chris Cotillo of MassLive.com reports.

Impact The right-hander was called up from Triple-A Worcester on Tuesday and will step into Boston's rotation to fill the spot vacated by Richard Fitts' demotion earlier this week. Criswell, who's worked out of the bullpen in each of his six MLB appearances this year, has a 5.06 ERA, 1.78 WHIP and 5:3 K:BB over 10.2 innings. It may only be a spot start for the 29-year-old since trade-acquisition Dustin May is scheduled to make his Red Sox debut Sunday.

AUGUST 1, 2025 • ROTOWIRE

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