On December 2nd, 2015 the Orioles acquired Mark Trumbo and C.J. Riefenhauser from the Mariners in exchange for Steve Clevenger. This deal turned out to be a fantastic one for the Orioles. Trumbo led the majors in home runs with 47 and anchored the Orioles powerful, if not always potent, offense. His overall value (1.6 bWAR and 2.2 fWAR) was not spectacular—defense matters kids—but he more than made up for it with his affordable contract.
The reason Trumbo was available at a bargain price was because he was due to make around $9 million in 2016 which the Orioles were happy to pay him, but the Mariners were not.