Aug. 30, 2013: OF Xavier Avery to Seattle Mariners for OF Michael Morse
This trade was a dud from the get-go. The Orioles acquired Morse to provide some power off the bench for a potential September postseason chase, but injuries torpedoed his tenure with the club. In 29 at-bats, Morse had just three hits — all singles — and no RBIs, and later revealed that he had a left wrist injury that required surgery.
The only reason this deal doesn’t get a failing grade is because the Orioles didn’t give up anything of value in Avery, who hasn’t played in the majors since 2012.