CHICAGO (AP) - White Sox right-hander Jake Peavy has been placed on the 15-day disabled list with a mild groin strain after leaving his most recent start.
The move Wednesday is retroactive to Monday, the day after Peavy came out of a game against the Detroit Tigers after four innings. The 30-year-old started the season on the DL, rehabbing from surgery to repair a muscle in his right shoulder.
White Sox manager Ozzie Guillen said the decision on when Peavy will return to the rotation will be between general manager Kenny Williams and the team's medical staff. However, he said he'd prefer that Peavy be sent on a minor-league rehab stint before returning.
"I expect him to go on a rehab assignment," Guillen said. "This kid has got to go 100 percent all the time, he only goes one way. He's got to test it in the minor leagues, that's my opinion."
Peavy is 2-1 with a 4.66 ERA in five starts this season.
The team recalled right-hander Lucas Harrell from Triple-A Charlotte to take his place on the roster. Harrell has appeared in one game with the White Sox this season, allowing four runs in four innings on May 29 against the Toronto Blue Jays.
The White Sox had been using a six-man rotation in recent weeks. With Peavy's injury, the club is returning to a traditional five-man setup.