Holloway signed a minor-league contract with the Mariners on Feb. 9.
Holloway, 27, held an 8.20 ERA and 45:39 K:BB over 26.3 innings at Triple-A in 2023 split between the Cubs and White Sox systems in his first year as a full-time reliever. The hard-throwing righty has some strikeout upside but hasn't ever been able to find the plate often enough for it to matter.