For the fourth time already this season, Casey Lawrence is back with the Seattle Mariners.

May surge: Five top Mariners prospects are red-hot at the plate

The team recalled the veteran right-handed pitcher from the Triple-A Tacoma Rainiers on Tuesday afternoon ahead of the second game of a three-game series in Chicago against the White Sox. Lawrence, 37, has made headlines this season because he’s been designated for assignment four times – thrice by the Mariners, and once by Toronto.

Lawrence is expected to pitch the bulk of Tuesday’s game against the White Sox after reliever Casey Legumina starts as an opener, per Seattle Sports’ Shannon Drayer. The Mariners signed Lawrence back on May 7, five days after he was granted free agency by the Blue Bays.

The Mariners optioned left-handed pitcher Jhonathan Díaz to Tacoma to make room for Lawrence on the active roster. Seattle also designated corner infielder Austin Shenton for assignment to make room on the 40-man roster.

Shenton, a native of Washington state and Bellingham High School alum, was originally drafted by the Mariners in the fifth round of the 2019 MLB Draft and made his MLB debut with Tampa Bay last year. The 27 year old returned to the Mariners organization over the offseason in a trade from Tampa Bay for cash after the Rays designated him for assignment.

Díaz, 28, was recalled from Triple-A by the Mariners on May 14 but did not pitch in a game. He has appeared in one game for Seattle this season and seven with the Rainiers.

Lawrence has pitched in four games with Seattle and once with the Blue Jays this season, allowing seven earned runs over 12 2/3 innings for a 4.97 ERA. He also has a 4.91 ERA over four appearances (14 2/3 innings) with Tacoma.

Lawrence originally played with the Mariners in 2017. He is set to become the sixth player in team history to have three separate tenures with Seattle, joining Mike Blowers, Raúl Ibañez, Norm Charlton, Roenis Elías and Jeff Nelson.

Game 2 of the Mariners’ series against the White Sox is set for a 4:40 p.m. Tuesday first pitch. Radio coverage on Seattle Sports will begin at 3:30 with the pregame show. However, it’s been a rainy day in Chicago, so there’s a good chance the game is postponed.

Also right now in Chicago… pic.twitter.com/V7vZRog6Bh

— Shannon Drayer (@shannondrayer) May 20, 2025

More on the Seattle Mariners

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• ESPN’s Passan: Mariners in great spot with expected pitching returns
• Savvy play by Seattle Mariners’ Ben Williamson gets national attention
• Drayer: How top M’s pitching prospects Cijntje, Sloan are opening eyes
• Brock & Salk: Seattle Mariners leading AL West no longer feels surprising

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CHICAGO – The Seattle Mariners won their fourth consecutive game on Monday night, beating the Chicago White Sox 5-1 at Rate Field. Seattle is now 27-19 and remains in first place in the American League West. Chicago fell to 14-34, the worst record in the American League.

The M’s have won all four games to start this 10-game road trip through San Diego, Chicago and Houston.

Luis Castillo earned the win on the mound after tossing seven scoreless innings. He allowed just three hits and no walks while striking out five. He’s now 4-3 with a 3.20 ERA.

Offensively, Jorge Polanco had an RBI single in the top of the third and Julio Rodriguez broke the game open in the top of the eighth with a grand slam. It was the second grand slam of his career and his eighth homer of the year.

After the game, Mariners on SI caught up with skipper Dan Wilson and Rodriguez to talk about the win.

Dan Wilson on Castillo’s performance:

​You ​know, ​great ​ballgame ​tonight. ​​I ​think ​when ​you ​look ​at ​the ​outing ​that ​Castillo ​turned ​in, ​you ​know, ​giving ​us ​seven ​full ​innings ​there, ​​really, ​really ​​just ​attacked ​the ​zone. ​I ​thought ​his ​two-​seamer ​was ​really ​good ​tonight. ​When ​you ​look ​at ​an ​outing ​like ​this, ​you ​know, ​he ​had ​everything ​going and attacked ​the ​zone, ​got ​ahead ​early, ​controlled the ​count ​on ​most ​of ​the ​hitters. ​And ​I ​thought that’s ​exactly ​what ​we ​needed ​from ​him. ​Great ​to ​get ​that ​from ​Luis.

On Jorge Polanco’s health, as he was pulled for a pinch-hitter against a left-handed pitcher again in the eighth inning:

He’s ​doing ​fine. ​You know, he’s ​coming ​along ​and ​right-handed ​swings ​are ​not ​too ​far ​behind, ​but ​we’re ​just ​taking ​it ​slow. ​And ​you ​know, ​his ​RBI ​single ​early ​was ​a ​big ​lift ​for ​us, ​I ​think. ​Getting ​on ​the ​board, ​getting ​us ​ahead, ​giving ​Luis (Castillo) ​a ​little ​bit ​of ​breathing ​room ​there ​on ​the ​mound ​was ​helpful. ​That ​was ​a ​big ​hit ​for ​us ​early ​in ​the ​game.

Julio Rodriguez on the team’s ability to add on late for a third straight game:

I ​mean, ​it’s ​huge, ​you ​know, ​especially, ​we’re ​on ​the ​road ​right ​now. ​Anything ​could ​happen ​later ​on and ​I ​feel ​like ​any ​run ​that ​we ​can add ​is ​big but, ​you ​know ​staying in​ the ​game…obviously it ​​was ​a ​little ​slow ​at ​the ​beginning, ​but, ​you ​know, ​we ​kept ​having ​good ​at-bats, ​kept ​putting ​the ​ball ​in ​play, ​and ​we were ​able ​to ​make ​something ​happen ​later.

The Mariners will play the White Sox again on Tuesday at 4:40 p.m. PT, but there is rain in the forecast.

NEW PODCAST IS OUT! Brady is back for another episode of “Refuse to Lose,” talking about the M’s recent struggles and why he’s still not worried yet. Then, he talks about the problems with the starting rotation and how its hurting the rest of the operation. Finally, we are joined by former Mariners coach and three-time World Series champion Scott Brosius, who talks about his career and his time in Seattle. And Brady has a message for “fans” in the wake of what happened to Astros’ pitcher Lance McCullers Jr. CLICK HERE:

BRASH BACK? Matt Brash, working back from Tommy John surgery, is looking closer and closer to his old self, as evidenced by what he did against Aaron Judge this week. CLICK HERE:

STILL A PERFECT ZERO: After a scoring change from Tuesday night, Andres Munoz still has a perfect 0.00 ERA for the season. Here’s what happened. CLICK HERE:

Continue to follow our Inside the Mariners coverage on social media by liking us on Facebook and by following Teren Kowatsch and Brady Farkas on “X” @Teren_Kowatsch and @RefuseToLosePod. You can subscribe to the “Refuse to Lose” podcast by clicking HERE.

We saw a little bit of everything on this spring Monday. Highs only in the low 60s with scattered showers, breezy winds and sunbreaks. 

We saw a little bit of everything on this spring Monday. Highs only in the low 60s with scattered showers, breezy winds and sunbreaks.  (FOX 13 Seattle)

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Showers this evening have come to an end with partly to mostly cloudy skies. Rain returns late tonight into early Monday. 

Showers this evening have come to an end with partly to mostly cloudy skies. Showers return late tonight into early Monday. 

It will be a wet start to Monday morning as our next frontal system moves onshore. We will also see snow fall along our higher mountain peaks. 

It will be a wet start to Monday morning as our next frontal system moves onshore.  (FOX 13 Seattle)

Winds will also be gusty on Monday as the front passes through and will stay gusty into the afternoon. 

Winds will also be gusty Monday as the front passes through and will stay gusty into the afternoon.  (FOX Weather)

Temperatures on Monday will be slightly cooler with highs only in the low 60s again. 

Temperatures Monday will be slightly cooler with highs only in the low 60s again. 

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Showers will linger into Tuesday with even a possible rumble of thunder. Spotty showers can’t be ruled out Wednesday, but skies will dry out through Thursday. A few showers are possible again Friday into the weekend, but overall conditions are looking drier and warmer than we have been seeing lately. 

Showers will linger into Tuesday with even a possible rumble of thunder.