This will be the third Mariners stint for Elias, who was previously with the team from 2014-15 and again from 2018-19. Formerly a starter, the 32-year-old has put up a 3.75 ERA over 377 innings in Seattle to this point. He has also taken the mound for the Red Sox and Nationals, though Elias has not pitched in the majors since 2019, owing in part to a flexor strain he suffered last season. Overall, Elias has logged a 3.97 ERA with a strikeout percentage of 19.7 and a walk percentage of 9.0 during his 388-inning big league career.
Sewald spent the first four seasons of his MLB tenure as a Met, but the 30-year-old struggled to a 5.50 ERA in 147 1/3 frames during that span. Witte, 31, has not played in the majors yet. The former Red Sox farmhand took 1,227 plate appearances at the Triple-A level for them and hit .261/.333/.370.