The Seattle Mariners placed right-handed reliever Diego Castillo on the 10-day injured list with right-shoulder inflammation and recalled right-handed pitcher Robert Dugger from Triple-A Tacoma.
Castillo, 27, was acquired by the Mariners via trade on July 29. Seattle sent minor league infielder Austin Shenton and right-handed reliever JT Chargois to the Tampa Bay Rays for Castillo.
With the Mariners, Castillo is 0-1 with a save and a 3.86 ERA in 10 appearances. With the Rays, he had 14 saves and a 2.72 ERA with 10 walks and 49 strikeouts in 37 appearances.
Dugger, 26, is 0-2 with a 6.45 ERA in 11 games (four starts) with the Mariners this season.
The Mariners (66-57) were four games out of a wild-card berth entering Saturday’s games.