Red Sox right-hander John Lackey has no tear in his injured right biceps, according to an MRI.
The team is still waiting to learn his immediate future.
Lackey's next start is scheduled for Sunday, but his status is up in the air.
"[Starting] on his fifth day, unlikely, but we're not at the point of saying he's a [candidate for the disabled list], either," manager John Farrell said.
Via Tony Lee/ESPN