KANSAS CITY, Mo. -- The Oakland Athletics placed closer Huston Street on the 15-day disabled list Sunday with a strained right groin.
The right-hander, who is sixth in the AL with 29 saves, was injured while taking the loss in the second game of a doubleheader against Kansas City on Friday night. The move is retroactive to Aug. 19.
Left-hander Ron Flores was called up from Triple-A Sacramento to take Street's roster spot.
Street allowed the tying and go-ahead runs in the Royals' four-run eighth inning Friday. He is 4-3 with a 3.22 ERA in 57 appearances with the AL West-leading A's.
He was also unavailable for 12 games from April 19-May 1 with a strained muscle in his chest.
This is Flores' fourth stint with the A's this season. He is 1-1 with a 3.09 ERA in 17 relief appearances with Oakland.