Doubront was down for a couple of weeks with tightness in his left elbow.
"He's already checked out -- had a good checkup," said manager Terry Francona. "He'll play catch today. If everything goes OK, he'll start his throwing program, but he checked out real well."
The injury was likely nothing more than typical Spring Training soreness.
"We're pretty confident that's what it was," Francona said. "He's had it before. We were talking about nickel-and-diming it and going day to day. But we thought this was the best way and in his best interest."
The club also got a positive report on utility infielder Brent Dlugach, who separated his left shoulder making a diving catch at third base on Tuesday.
In a statement, the team said that Dlugach will resume baseball activities once his range of motion and strength are ready. Surgery won't be necessary.