Mariners Designate Casey Legumina For Assignment
The Mariners announced that they have recalled right-hander Alex Hoppe. The righty will be making his major league debut as soon as he gets into a game. In a corresponding move, Seattle has designated righty Casey Legumina for assignment. Daniel Kramer of MLB.com reported the moves prior to the official announcement.
Hoppe, 27, was just acquired from the Red Sox in November. That was the Rule 5 protection deadline. The Sox apparently didn’t have roster space for him, so they sent him to the Mariners in exchange for minor league catcher Luke Heyman. The M’s immediately selected him to their 40-man so that he wouldn’t be available in the Rule 5.
He started the season on optional assignment at Triple-A and is out to a great start with his new organization, having thrown eight scoreless innings. Of the 30 batters he has faced, he struck out 12 of them, a 40% clip. He also induced grounders on two thirds of ball in play. He has issued three walks, a 10% pace.
That’s a small sample of size of work. Last year’s numbers were somewhat similar but not quite as impressive. He tossed 61 1/3 innings across Double-A and Triple-A with a 4.55 ERA, 26.4% strikeout rate, 12.3% walk rate and 54.7% ground ball rate.
His fastball averages in the upper-90s and he pairs that with a high-80s slider he has been throwing more than half the time so far this year, while also mixing in a cutter and a changeup. The M’s will give him a chance to see if his stuff plays against major league hitters. He has a full slate of options and can be easily sent back down to Triple-A if he scuffles, or just if they need some fresh arms.
For now, the roster casualty is Legumina. He made his major league debut with the Reds but that club designated him for assignment in January of 2025. The Mariners sent cash to Cincinnati in order to get Legumina. His first season with the Mariners didn’t go especially well. He made 48 appearances for the big league club, throwing 49 2/3 innings with a 5.62 ERA. His 25.1% strikeout rate was a bit better than average but his 11.4% walk rate was a few ticks worse than par.
Due to those struggles, he was sent to the minors a few times and burned his final option year, leaving him out of options here in 2026. That put him on thin ice in terms of his roster spot. Thus far, he has thrown 11 2/3 innings over eight appearances. His 4.63 ERA is about a run better than last year but his strikeout rate is down to 17% in that small sample. The lower ERA is mostly due to the fact that none of the fly balls he has allowed have cleared the fence, a fact that wouldn’t have been sustainable.
His velocity is also down on most of his pitches. His four-seamer averaged 94.3 miles per hour last year but is down to 93.5 so far this year. His sinker has gone from 93.8 to 93 mph while his slider has dropped from 81.1 to 79.7 mph.
Legumina’s struggles and his out-of-options status have pushed him into DFA limbo, which can last as long as a week. The waiver process takes 48 hours, so Seattle could take as long as five days to explore trade interest, but they could also place him on waivers sooner than that. If he were to clear outright waivers, he would stick with the Mariners as non-roster depth. Since he doesn’t have a previous career outright or at least three years of service time, he would not have the right to elect free agency.
Photo courtesy of David Frerker, Imagn Images
Mariners Acquire Alex Hoppe, Designate Tayler Saucedo For Assignment
The Mariners announced that they have acquired right-hander Alex Hoppe from the Red Sox in exchange for minor league catcher Luke Heyman. Hoppe has been selected to the 40-man roster to protect him from the Rule 5 draft. Left-hander Tayler Saucedo has been designated for assignment in a corresponding move. Chris Cotillo of MassLive first reported that Hoppe was heading to the Mariners. Tim Healey of The Boston Globe first reported that Heyman was heading to the Sox.
Hoppe, 27 in December, was a sixth-round pick of the Sox in 2022. Since then, he has been working as a pure reliever in the minors, with good amounts of strikeouts and ground balls but also some wildness.
Dating back to the start of 2024, Hoppe has thrown 127 2/3 innings between Double-A and Triple-A, allowing 5.01 earned runs per nine. His 12% walk rate in that time is quite high but he also punched out 23.6% of batters faced and got opponents to hit the ball into the dirt more than half the time.
Perhaps the Sox didn’t have much faith about Hoppe reining in his control going forward, or perhaps he was just the casualty of a roster squeeze. The Sox have been busy today, shuffling guys around to make space on Rule 5 deadline day. In addition to this deal, they also sent lefties Brennan Bernardino and Chris Murphy to the Rockies and White Sox respectively. Giving Hoppe a roster spot would have required opening another 40-man spot.
Instead, they have flipped him to the Mariners, getting back a non-roster prospect in exchange. Heyman, 22, was taken by the Mariners in the 14th round of the draft just a few months ago. He showed big power in his college career but hasn’t yet made his professional debut. He gives the Sox a long-term lottery ticket behind the plate while the M’s get more immediate pitching depth.
To make room for Hoppe, the Mariners have nudged off Saucedo. The 32-year-old lefty has some decent big league work on his track record but he spent most of 2025 on optional assignment, only making ten big league appearances. He exhausted his final option season in the process. Saucedo qualified for arbitration a year ago and made $937,500 in 2025. MLBTR contributor Matt Swartz projected him for a small bump to $1.1MM next year. It seems the M’s weren’t planning to tender him a contract.
They will have some time to explore trade interest. Over the 2023 and 2024 seasons, the lefty posted a 3.54 ERA over 86 1/3 big league innings, with most of his success due to a strong 55% ground ball rate. With those numbers and three years of club control, he could entice some teams. However, given his out-of-options status, he’d be hard to roster. It’s possible he ends up non-tendered on Friday, which would send him to free agency.
Photo courtesy of Nathan Ray Seebeck, Imagn Images