How it happened:
Beckett went on the disabled list May 19 with a lower back strain. He had endured back spasms prior to May 19, and tweaked the back when he slipped on a wet mound in a game May 18 vs. the Yankees.
Status: Beckett returned during the team's West Coast trip at the end of July. The Sox hope his injury problems are behind him.
Peter Abraham/Globe Staff