The Mariners have landed right-hander JT Chargois in a deal with the Marlins, The Athletic’s Ken Rosenthal reports. In return, the Marlins will receive minor league right-hander Will Schomberg, as reported by Christina De Nicola of MLB.com.

Chargois began the 2024 season on the injured list due to neck spasms and did not make his 2024 debut until mid-June. Since his return from the IL, the 33-year-old has put up excellent surface-level numbers, having allowed just three earned runs over 16 2/3 innings. However, he has struck out only 12 batters (16.9% K%) while walking seven (9.9% walk rate), and all three runs he has given up have come on home runs.

What’s more, he is inducing groundballs at just a 34.6% rate, well below his 52.9% career average entering the season. As a result, Chargois’s underlying numbers are not nearly as impressive as his sparkling ERA; he has a 4.74 SIERA and 5.21 xERA, both of which would be the worst of his career. Even more worrisome, his fastball velocity has decreased significantly. His sinker, which averaged 96.3 mph last season, is down to 94.4 mph this year.

With all that said, Chargois has been an effective reliever in the recent past. Over 211 2/3 career innings with the Twins, Dodgers, Mariners, Rays, and Marlins, he has a 3.40 ERA and 3.84 SIERA. He was particularly effective from 2021-23, following his return from a brief stint in NPB. Across those three seasons, the righty went 9-1 with a 2.89 ERA and 3.99 SIERA over 118 1/3 innings.

Perhaps a return to Seattle — an organization known for developing excellent pitching — will help Chargois get back on the right track. After all, it was the Mariners who took a chance on him in 2021 after his difficult 2019 season with the Dodgers (6.33 ERA in 21 1/3 IP) and poor performance in Japan (4.58 ERA in 35 1/3 IP). He pitched to a 3.00 ERA in 30 IP with Seattle over the first four months of the season before he was traded to Tampa Bay at the deadline.

Chargois will presumably slot into a middle relief role in the Mariners’ bullpen. Seattle ranks 12th in MLB with a 3.76 bullpen ERA and sixth with a 3.54 bullpen SIERA this season. Every reliever currently on the team’s active roster has a SIERA under 3.70, but the Mariners surely understand that there is no such thing as too much bullpen depth down the stretch.

Chargois, who is earning $1.285M this season, will be eligible for arbitration one more time in 2025.

Schomberg signed with the Mariners organization as an undrafted free agent in July of 2023. He has split the 2024 season between Single-A and High-A, pitching to a 2.83 ERA and 4.23 FIP in 19 starts (92 1/3 innings). Eric Longenhagen of FanGraphs included Schomberg among the “other prospects of note” beyond his top 34 prospects in the Mariners system earlier this month.

Longenhagen praised the righty’s “elite breaking ball spin,” noting the success he had “throwing a lot of cutters and curveballs” before his promotion to High-A.