The Mariners announced that they’ve claimed left-handed reliever Sam Moll off waivers from the Pirates, bringing their 40-man roster to a total of 37 players.

Pittsburgh had only just claimed the 25-year-old Moll off waivers from the A’s on Monday, but the Bucs apparently did so with the hope of then passing Moll through waivers themselves in order to keep him in the organization without committing a 40-man roster spot.

A former third-round pick of the Rockies, Moll made his big league debut in 2017, though he was tagged for eight earned runs in a small sample of 6 2/3 innings. His work in the minors, however, is more solid. In 54 1/3 innings between the Triple-A affiliates for the Rockies and the A’s, Moll pitched to a 3.64 ERA with 7.8 K/9 against 3.1 BB/9.

Moll has a history of missing bats and inducing grounders at an above-average rate through the Double-A level and will give Seattle a lefty with multiple minor league options remaining to compete for a bullpen spot next spring — assuming he makes it to camp with the Mariners and doesn’t land with another organization via waivers, of course.