I'm not sure I agree with that. I see Steve Johnson or Wada as the long guy; and Ayala, O'Day, Hunter, Patton, Strop, and Jim Johnson as the the best bets for the pen.
If I do remember correctly, DD has said Wada will most likely stay back in extended spring training but will ready for most of the year. Johnson, O'Day, Strop, Patton, Hunter, Ayala, Johnson. I said in one of my off-season guides that the O's should look for a little bit of lefty relief help- maybe not to make the team, but to provide depth and competition considering Patton will likely be the only lefty in the pen with Wada in EST, Phillips being DFA'd, and Matusz most likely being a starter in the minors. Mike Bielfore should be able to help this year though.