How Mariners pitcher Bryce Miller’s latest bullpen went

Bryce Miller threw a 30-pitch bullpen at the team’s spring training camp Tuesday morning, and all went well for the Seattle Mariners pitcher who started dealing with left oblique inflammation in late February.

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“I didn’t feel anything,” Miller said before explaining his current throwing schedule. “We’re kind of doing three-day blocks right now. Do it again in three days, go a little faster. They’re boring for me because I’m just flipping it in there, but take it slow, be smart with it. Everything felt really good.”

Miller was set to throw a bullpen last Wednesday but stopped short of throwing a pitch with full intent after experiencing tightness while going through his usual progression.

On Tuesday, Miller made it through the warmup and threw about 30 pitches at an estimated 80% intensity, which he would like to increase to 90% in his next bullpen. He mixed in all of his pitches, throwing his breaking pitches for the first time off the mound since the injury.

“I assume it’ll respond well,” Miller said of his oblique, “but just make sure it’s feeling good, and I’ll go kind of as hard as it’ll let me (in my next bullpen). But I’ll still be smart.”

Yikes! Me, not Bryce. pic.twitter.com/5s7ZCrIsWU

— Shannon Drayer (@shannondrayer) March 17, 2026

Miller’s plan is to increase his velocity over his next bullpen or two, then cross one last hurdle before facing hitters in a live BP.

“I want to be able to have a max effort bullpen where I’m ripping everything and not feel anything before I see hitters,” he said, “just so I can not have it in my mind about if I’m going to re-tweak it or feel it at all. So yeah, hopefully that’s a week or less away.”

Miller was limited to 18 starts during the 2025 regular season due to multiple stints on the injured list, and though he posted a 5.68 ERA, he was strong in the playoffs. Miller allowed just four runs over three postseason starts (14 1/3 innings) for a 2.51 ERA with nine strikeouts to five walks. He’ll likely be on the IL again to start this season, which begins in nine days, but Seattle is expected to only need a short-term solution to fill his spot in the starting rotation.

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