From LATimes.com:

USC sophomore point guard Daniel Hackett will be sidelined at least six
weeks after suffering multiple fractures of his jaw Thursday afternoon
when he was struck by the elbow of teammate O.J. Mayo during a pickup
game at the Galen Center.

Hackett said Mayo grabbed a rebound and turned to pass before smacking
Hackett on the left side of his jaw. Hackett was taken to a hospital
and had surgery Friday to wire shut his jaw, which was broken in three
places.

"It’s sore right now," Hackett said Saturday afternoon by telephone after returning to campus. "I can’t eat, I can barely talk."

The 6-foot-5, 205-pound Hackett, who started 16 games last season and
averaged 5.3 points and 2.9 rebounds, said he cannot practice for six
weeks, meaning he will sit out the Trojans’ opener Nov. 10 against
Mercer at the Galen Center.

I guess this is injury week for SC.