Seattle Mariners Make Roster Move That Keeps Vital Arm in Their System

Casey Lawrence, who pitched for the Mariners on Saturday and Sunday, is headed back to Triple-A Tacoma.

Seattle Mariners pitcher Casey Lawrence throws against the Oakland Athletics in the third inning at Hohokam Stadium on March 17. | Rick Scuteri-Imagn Images

After being designated for assignment by the Seattle Mariners, right-hander Casey Lawrence has cleared waivers and been outrighted to Triple-A Tacoma.

Roster move:

RHP Casey Lawrence cleared waivers and has been outrighted to Triple-A Tacoma.

— Mariners PR (@MarinersPR) April 22, 2025

It's a solid move that keeps Lawrence in the system, providing depth and insurance to both the starting rotation and bullpen.

Lawrence, 37, has made three appearances for the M's this year, earning a 7-6 win over the Houston Astros on April 9. He's 1-0 with a 3.60 ERA and no strikeouts in five innings.

A five-year major league veteran, Lawrence made his debut in 2017 with the Toronto Blue Jays before appearing in games for the Mariners in 2017 and 2018. He appeared in games for Toronto (2022) and the St. Louis Cardinals (2023) before returning to the Mariners this season.

Lifetime, he's 5-4 with a 6.63 ERA.

In the minors, Lawrence is 0-0 with a 4.35 ERA for Tacoma this year. He started 29 games for Tacoma last season, finishing 1-11 with a 5.95 ERA.

Because of an injury to George Kirby, some short starts from Luis Castillo and Logan Gilbert, and multiple extra-inning games, the Mariners' bullpen has been heavily taxed so far this season, and Lawrence's ability to throw multiple innings is a luxury for the organization.

The M's brought up youngster Sauryn Lao to take Lawrence's spot on the roster on Sunday before the series finale against the Blue Jays.

At 12-10, the Mariners will open up a series Tuesday afternoon against the Boston Red Sox at Fenway Park. First pitch is scheduled for 3:45 p.m. PT.

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