The Mariners on Saturday selected the contract of right-hander Nick Davila from Double-A Arkansas and optioned lefty Josh Simpson to Triple-A Tacoma.
The Mariners' 40-man roster is now full at 40 players.
Davila, 27, will make his MLB debut when he first appears in a game. He has appeared in eight games this season with Double-A Arkansas, recording two saves with a 2.00 ERA (2 ER, 9 IP), one walk and 10 strikeouts. He holds a 0.78 WHIP, holding opponents to a .182 average with no extra-base hits.
Davila was originally signed as an undrafted free agent by the Detroit Tigers on July 7, 2020. He signed a Minor League contract with the Mariners on March 27, 2023. He has appeared in 6 Minor League seasons in the Tigers (2021-22) and Mariners (2023-c) organizations, going 18-29 with a 3.94 ERA (153 ER, 349 2/3 IP), 104 walks and 339 strikeouts in 122 games (42 starts). Davila was invited to Major League Spring Training this year and appeared in seven Cactus League games.
The 6-foot-3 right-hander is a Hialeah, Fla., native. He played one season at the University of South Florida after transferring from Hillsborough Community College (Tampa, Fla.).
Simpson, 28, was recalled prior to Friday's game. He has made nine appearances for the Rainiers this season, posting a 0.96 ERA (1 ER, 9 1/3 IP) with 12 strikeouts and six walks. The left-hander was acquired by Seattle from the Miami Marlins in exchange for cash considerations on Feb. 16 and spent time with the Mariners in Spring Training this year.
He made 31 appearances in the Majors for Miami in 2025, going 4-2 with a 7.34 ERA (25 ER, 30 2/3 IP) with 36 strikeouts and 22 walks. He made his big league debut on June 21 and recorded his first win five days later, on June 26.
Simpson was originally selected by the Marlins in the 32nd round of the 2019 Draft out of Columbia University (NY). He is one of 23 MLB players all-time from Columbia University, a list that includes Hall of Famers Lou Gehrig, Sandy Koufax and Eddie Collins.