Seattle Mariners Roster Moves 4/16

Seattle Mariners Roster Transactions | Inside The Diamonds

The Seattle Mariners bullpen has struggled to start the 2025 season, and they are looking for a solution. One pitcher who has struggled is Gregory Santos. The Mariners have now announced they will send Santos to the Triple-A Tacoma Rainiers. In a corresponding move, they will call up Will Klein.

Purchase tickets via Ticketmaster

Gregory Santos

Santos came to the Mariners before last year and was projected to be a high-leverage arm. The Mariners had hopes of him being a strong seventh or eighth inning guy, but he had an injury-plagued season in 2024. Last season, Santos had a 4.91 ERA through 7.1 innings. He also had six strikeouts. Fast forward to this season, and while Santos has been healthy, he has been stumbling through his eight relief appearances. He currently has a 5.14 ERA through 7.1 innings. He’s given up four earned runs, 8 hits, and 8 walks. He has yet to record a strikeout this season.

Will Klein

The Mariners acquired Klein from the Athletics. This season, he has made seven relief appearances for Tacoma. He is 1-0 with a 12.79 ERA through 6.1 innings. Klein made his MLB debut last season when he appeared for both the Kansas City Royals and the Athletics. He appeared in 7.1 innings and posted a 1-0 record with an 11.05 ERA,

Dacota Haynes

A seasoned veteran when it comes to baseball. Dacota has written for multiple news outlets and serves as an umpire. Born and raised in the PNW, he'll mostly write about the Seattle Mariners.

Leave a Reply

Cincinnati Reds Roster Transactions | Inside The Diamonds

Cincinnati Reds Roster Moves 7/1/25

The Cincinnati Reds have announced four moves. They have added two pitchers from Triple-A. Meanwhile, they sent two back down in a swap of bullpen arms.

Read More
Toronto Blue Jays Roster Transactions | Inside The Diamonds

Toronto Blue Jays Roster Moves 7/1/25

Toronto Blue Jays announced two roster moves. They have recalled one bat from Triple-A Buffalo and have optioned another back to Buffalo in a roster spot swap.

Read More
Twins Roster Transactions | Inside The Diamonds

Minnesota Twins Roster Moves 7/1/25

The Minnesota Twins have activated one player from the injured list. They have designated another for assignment to make room on the roster before first pitch.

Read More