Although Southern California's Dwayne Jarrett told coach Pete Carroll he wanted to try to play Saturday at Washington State, he has been ruled out for the game, ESPN's Joe Schad has learned.
Jarrett, who injured his shoulder in the third quarter against Arizona, appeared at the beginning of Wednesday's practice but did not participate in any drills before departing early.
He is expected to miss two to four weeks.
"He's still pretty sore," Carroll told the Los Angeles Daily News on Wednesday. "It's day-to-day."
Patrick Turner, a 6-foot-5 sophomore, is Jarrett's likely replacement.
"We play the same position and we're both 6-foot-5, but you just have to make plays and that's what it comes down to," Turner said Monday.
Jarrett caught his 32nd career touchdown pass last Saturday, tying Stanford's Ken Margerum for the Pac-10 record.
Jarrett has 20 receptions for 207 yards and three touchdowns this season.
Trojans defensive tackle Sedrick Ellis has also been ruled out for Saturday's game with a knee injury. He underwent arthroscopic surgery Sept. 12 and is expected to return soon.