Now, however, Doubront will get another chance. On the day rosters were expanded, Doubront was promoted from Triple-A Pawtucket.
"A couple injuries [are] in the past," Doubront said. "Now I feel a lot better and stronger. My arm is great. Everything's fine now."
Doubront pitched 18 times for Pawtucket this season, 16 of them starts. He went 2-5 with a 4.22 ERA.
He will give the Red Sox another arm out of the bullpen down the stretch.
"Four months ago, I started with all the injuries, and I was pretty much frustrated," Doubront said. "But I handled it. I kept working, I never stopped working. I'm strong in my legs and my core. Now I'm in great shape to help the team."
Manager Terry Francona appreciated the job Doubront did last time, whether it was in spot starts or the bullpen.
"He's kind of a unique young guy -- another one of our young guys we kind of have learned to rely on and we won't hesitate to use him," Francona said.