The All-Star righty will throw a bullpen session on Monday at Fenway Park, his first since spraining his right ankle and being forced out of his Sept. 5 start at Toronto in the fourth inning.
The Red Sox have Tim Wakefield slotted in for Tuesday and John Lackey on Wednesday. Could Beckett start Thursday against the Rays?
"We don't know. We'll see," manager Terry Francona said after the Red Sox's 9-1 loss to the Rays. "I don't know. I think that might be a little ambitious. I think he wants to do it, which is a good sign. We'll see how he does."
Beckett is 12-5 with a 2.49 ERA. The Red Sox are short-handed in the rotation at the moment.
Erik Bedard is out indefinitely as he deals with left knee and lat issues.
Clay Buchholz hasn't pitched since June 16 because of a stress fracture in his back, but he is on the mend and could factor in at some point, be it as a starter or a reliever.
"Clay is doing really well," said Francona. "We'll also sit and map [it] out. I think we want to get another [session of catch] on Tuesday, another day of a good 120 [feet] and then we'll start thinking about maybe getting him on a mound."