Trot Nixon has been diagnosed with a Grade 2 right biceps strain and will go on the disabled list.
Francona said that Grade 2 means that the strain is not insignificant, but it's not horrible either. Wily Mo Pena is starting tonight in right field and figures to see significant playing time in Nixon's absence.
"Wily Mo played a lot when Coco was out and he did a very good job," said Francona. "I'm sure he'll get a lot of at-bats, but we want to play Gabe [Kapler] some too in center and in right."