"Padilla has a little soreness in his bicep," Red Sox manager Bobby Valentine said. "He could probably pitch on Friday, but we just aren't willing to take the chance of going short these next couple of days. It's not fair to the guys who are out there, and it could put us in a real bind."
Valentine held Padilla out of action against the Rangers on Monday and Tuesday after he gave up two home runs while not retiring a batter on Sunday. In that game, Padilla's velocity was noticeably down.
Mortensen was the player the Red Sox got from the Rockies for Marco Scutaro. He has turned out to be a valuable acquisition, posting a 1.17 ERA over 10 outings.
"Well, let's not jinx him, but he's risen to the occasion," Valentine said. "And he's thrown as well in Triple-A. It's not like he's just getting lucky. He's a pretty good pitcher. He throws different pitches, and he says he's ready to go."
To this point, Mortensen has been used mostly as a long reliever. Will Valentine start using him in some more high-leverage situations?
"You know, I hope there's only important situations for my bullpen pitchers to pitch in," Valentine said. "Then you could use everyone the way you draw it up. Often is the case that the guy who's available has to pitch a couple of innings when you don't really like it. One thing he adds is length, and that always has to be a factor when either using him or not using him. But yeah, I think he could pitch anywhere in the game."