OAKLAND -- Right-handed pitcher Justin Germano has all but officially joined the Red Sox.
Clayton Mortensen was optioned to Triple-A Pawtucket after the Red Sox's 3-2 loss to the A's on Tuesday and Germano will be added to the active roster prior to Wednesday's series finale.
Germano, 29, exercised the opt-clause in his Minor League contract Monday, and the Sox needed to add him to the 25-man roster or risk losing him to another club. In 17 appearances (16 starts) with the PawSox, Germano was 9-4 with a 2.40 ERA, 72 strikeouts, 13 walks, and 15 home runs allowed in 105 innings.
"I know there are a lot of teams hurting for pitching right now and a lot of teams have lost guys and guys who aren't performing well, so I know there's opportunity out there, whether or not they're interested in me is the big question," Germano told ESPNBoston.com. "I'm still part of the Red Sox organization, and that's my priority right now. I'll deal with them and see what happens, and if they don't have a spot for me, we might have to see what's out there."
Germano's spent parts of six seasons in the Majors, most recently with the Indians from 2010-11. Lifetime in the Majors, he's 8-20 with a 5.02 ERA in 253 innings and 79 appearances, 36 of them starts.
The Sox don't need to clear a spot on the 40-man roster, as they designated outfielder Darnell McDonald for assignment on Saturday and placed Bobby Jenks on unconditional release waivers after reaching a contract termination settlement with the reliever on Tuesday.
After surrendering just one run on five hits and throwing 71 pitches in a five-inning relief appearance on Monday, it was unlikely Mortensen could have pitched until at least Friday.