USC’s QB Sanchez injures knee

Mark Sanchez, expected to start at quarterback for the Southern Cal Trojans this season, injured his knee during a Friday practice.

Sanchez, a junior, was carted off the field shortly after practice began, according to the Los Angeles Times. Trainers iced down the knee and removed his jersey and pads. He then was taken for X-rays.

Southern Cal assistant sports information director Paul Goldberg confirmed to Sporting News that Sanchez was taken from the field and that was injured as the Trojans began to stretch at the start of Friday’s practice. An update on Sanchez’s condition is expected later Friday.

Sanchez won the starting job in spring practices, beating out transfer Mitch Mustain and freshman Aaron Corp.

A witness told the Times that Sanchez was throwing a football, put weight on his left knee and collapsed.

Sanchez is a 6-3, 225-pound junior from Mission Viejo, Calif. He is expected to replace last season’s starter, John David Booty. Last season, Sanchez made three starts when Booty was injured. He was 69-of-114 passing for 695 years with seven touchdowns and five interceptions.

There was no immediate word on the severity of Sanchez’s injury.