The Mariners have signed right-hander Michael Fulmer to a minor league deal, according to his transactions tracker at MLB.com. He had been with the Royals on a minor league deal but the log indicates he was released from that pact a few days ago.
Fulmer, 32, is having a nomadic year. He signed a two-year minor league deal with the Red Sox ahead of the 2024 season. He had undergone UCL surgery and was going to miss that entire campaign. He came into 2025 with a chance to earn a job on Boston’s roster. He didn’t break camp with the club but was called up by mid-April. He was designated for assignment a few days later, clearing waivers and electing free agency.
From there, he landed a minor league deal with the Cubs. He was selected to the big league roster in June but was again cut a few days later. He cleared waivers and elected free agency again, which led him to the Royals.
Around those transactions, he has thrown 5 2/3 big league innings, allowing three earned runs on six hits and two walks with three strikeouts. He has also thrown 54 1/3 Triple-A innings with a 3.98 earned run average, 29.8% strikeout rate and 10.5% walk rate.
Fulmer also has past success on his track record. He initially broke in as a starter with the Tigers and won American League Rookie of the Year in 2016. His results tailed off from there and he wound up in the bullpen, which led to some more good results. He tossed 190 1/3 innings from 2021 to 2023 with a 3.55 ERA, 24.6% strikeout rate and 9.4% walk rate.
As mentioned, Fulmer missed the 2024 season while recovering from surgery. This year, he’s mostly been stuck in the minors but is still getting strikeouts. The M’s recently lost Trent Thornton to an Achilles tear, subtracting a bit of bullpen depth. Fulmer fills in some of that depth without taking up a roster spot.
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