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.
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