Seattle Mariners pitcher Logan Gilbert throws during a game against the Toronto Blue Jays on April 19 at Rogers Centre. Dan Hamilton-Imagn Images

Pair of Injured Seattle Mariners Pitchers Take Big Step Towards Returns

Originally posted on Seattle Mariners on SI
By Teren Kowatsch | Last updated May 23, 2025 5:30 PM ET

Thursday marked the season debut of Seattle Mariners starting pitcher and 2023 All-Star George Kirby. He was activated off the 15-day injured list after missing the first two months of the year with right shoulder inflammation. Another pair of injured Mariners pitchers aren't too far behind Kirby in making their returns.

Logan Gilbert is on the 15-day IL with a Grade 1 flexor strain and Bryce Miller is on the shelf with right elbow inflammation. Both threw sim games against live batters before a game against the Houston Astros on Friday.

Per a report on "X" from MLB.com's Daniel Kramer, Miller's sim game was two innings. Miller, like Kirby, will be on a six-day rotation going forward. Miller is hopeful he'll avoid a rehab assignment and return to the rotation right away when he's eligible to be activated off the IL.

Bryce Miller said he’ll throw an up-and-down, two-inning sim game tomorrow here in Houston and will operate on a six-day routine moving forward.

He believes he’ll avoid a Minor League rehab assignment and return to the Mariners’ rotation soon, if all continues to go well.
— Daniel Kramer (@DKramer_) May 22, 2025

Gilbert's sim game was also two innings against live batters. Per an article from the Seattle Times' Tim Booth, Gilbert throwing a sim game doesn't indicate an imminent return, and he'll still need a rehab assignment in the minor leagues.

Miller has struggled with discomfort the whole season. He posted a 5.22 ERA with 35 strikeouts in 39.2 innings pitched. He received a cortisone shot before he was placed on the IL May 14 (retroactive to May 12).

A little bit of Bryce Miller also throwing today in Houston. pic.twitter.com/yj06qO1gI2
— Tim Booth (@ByTimBooth) May 23, 2025

Gilbert made six starts before he was pulled after the third inning in a start against the Miami Marlins on April 25. He was placed on the injured list one day later. He has a 2.37 ERA this year with 44 strikeouts in 30.1 innings.

Logan Gilbert getting ready to throw a live BP here in Houston where the real feel temperature is currently 172 degrees, approximately pic.twitter.com/DnJ0iUnpkZ
— Tim Booth (@ByTimBooth) May 23, 2025

With Miller and Kirby both being on a six-day cycle, it seems likely the team could opt for a six-man rotation going forward, at least until Gilbert's return.

This article first appeared on Seattle Mariners on SI and was syndicated with permission.

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