Darren O'Day's (hamstring) next scheduled bullpen session is up in the air after he felt continued discomfort the last time he threw off a mound.
Hyun Soo Kim went 2-for-4 with a solo home run and two RBI in Thursday's loss to the Mariners.
Chris Tillman struggled in Thursday's loss to the Mariners, surrendering four runs on six hits over 4 2/3 innings.
Ubaldo Jimenez will start Sunday's game against the Mariners.
Orioles optioned RHP Oliver Drake to Triple-A Norfolk.
Orioles optioned C Francisco Pena to Triple-A Norfolk.
Orioles activated C Caleb Joseph from the 15-day disabled list.
Orioles activated RHP Vance Worley from the 15-day disabled list.
Orioles purchased the contract of RHP Chaz Roe from Triple-A Norfolk.
Orioles placed LHP T.J. McFarland on the 15-day disabled list with left knee inflammation.
Mark Trumbo homered, doubled and knocked in four runs in the Orioles' 12-6 win over the Padres on Wednesday.
Yovani Gallardo yielded three runs and three hits in six innings Wednesday against the Padres.
Jonathan Schoop doubled twice, walked and scored three times Wednesday against the Padres.
Caleb Joseph (groin) could be cleared to join the Orioles after a rehab game Wednesday with High-A Frederick.
Vance Worley (groin) is traveling to Seattle to join the Orioles.