The Red Sox on Saturday placed second baseman Dustin Pedroia back on the 15-day DL with a strained right hamstring, the same injury that cost him nearly a month of action straddling the All-Star break.

Pedroia was activated from the DL on July 17 but struggled. He was hitless in 18 at-bats over his first five games before a 1-for-4 effort Wednesday in Houston.