DENVER -- The Phillies took a couple more hits to their starting pitching on Sunday.
They announced right-hander Chad Billingsley has been placed on the 15-day disabled list with a strained right latissimus dorsi. He could rejoin the rotation in four to six weeks. Triple-A right-hander David Buchanan, who opened the season in the Phillies' rotation, suffered a severely sprained right ankle in Sunday's start. He is expected to miss six to eight weeks.
"Both those injuries are a blow to the starting pitching depth that we have," Phillies manager Ryne Sandberg said.
Triple-A right-hander Severino Gonzalez will start in Billingsley's place on Wednesday against the Rockies at Coors Field.