After consulting with Dr. Neal ElAttrache and Dr. Greg Pearl, the Dodgers decided Beckett would undergo a surgery to relieve pressure on the nerve in his neck area, commonly known as thoracic outlet syndrome. Pearl will perform the surgery in Dallas the week of July 8.
Beckett's is expected to be sidelined three-to-five months, which would put him back on the field in time for spring training.
Before the announcement was made Saturday, Dodgers manager Don Mattingly said Beckett had suffered a setback while throwing Friday. This week was Beckett's first time throwing in a month.
"Josh kind of went backwards a little bit," Mattingly said. "I know he had some tingling again yesterday after throwing. He didn't throw very long. I know there was a little bit of a setback there."
The 33-year-old Beckett is making $15.75 million this season and is due to make the same amount next year. In eight starts this season, Beckett is 0-5 with a 5.19 ERA.