The Mariners acquired catcher Steve Clevenger from the Baltimore Orioles in exchange for first baseman/outfielder Mark Trumbo and left-handed pitcher C.J. Riefenhauser.
Clevenger, 29, split the 2015 season between the Orioles and Triple-A Norfolk in the International League. In two stints with the Orioles last season he hit .287 (29×101) with 11 runs scored, 4 doubles, 2 triples, 2 home runs and 15 RBI in 30 games (May 26-June 4 & Aug. 14-end of season). He also appeared in 75 games with Norfolk, and was named the International League All-Star team, batting .305 (80×262) with 28 runs scored, 11 doubles, 4 home runs and 32 RBI in 75 games.
Clevenger began his career as a middle infielder after being selected by the Chicago Cubs in the 7th round of the 2006 MLB First-Year Player Draft out of Chipola College (Marianna, FL). He was converted to catcher after his first professional season in 2007. He made his Major League debut with the Cubs on September 26, 2011 vs. the San at San Diego (0x3) and spent parts of three seasons with the Cubs before being traded to Baltimore along with RHP Scott Feldman in exchange for RHP Jake Arrieta, RHP Pedro Strop and international signing bonus slots 3 and 4 on July 2, 2013. Over parts of five seasons in the Majors with Chicago-NL (2011-13) and Baltimore (2013-15), he is batting .228 (95×416) with 30 runs scored, 26 doubles, 3 triples, 3 home runs and 41 RBI over 148 career games. Clevenger has a career .310 (769×2477) average with 321 runs scored, 155 doubles, 11 triples, 34 home runs and 348 RBI in 733 games over 10 seasons in the minor leagues.
Trumbo was acquired by Seattle along with LHP Vidal Nuño as part of 6-player trade with Arizona in exchange for RHP Dominic Leone, C Welington Castillo, OF Gabby Guerrero & INF Jack Reinheimer on June 3. Combined between Arizona and Seattle, Trumbo hit .262 (133×508) with 62 runs scored, 23 doubles, 3 triples, 22 home runs and 64 RBI in 142 games. Riefenhauser, 25, was acquired by the Mariners as part of a six-player trade along with RHP Nathan Karns and OF Boog Powell from the Tampa Bay Rays in exchange for 1B Logan Morrison, INF/OF Brad Miller and RHP Danny Farquhar on November 5. He made 17 appearances over four separate stints with the Rays in 2015, combining for a 1-0, 5.52 mark, all in relief. He appeared in 29 games (all in relief) with AAA Durham, posting a 4-2, 2.86 mark with 1 save (11 ER, 34.2 IP).