The quarterbacks? The offensive line? ...The receivers?
The first two position groups should be much more areas of concern going into week two.
But the receiving corps certainly didn't put together the game they are capable of -- including junior receiver Marqise Lee.
Lee finished with 8 catches for 104 yards. Fine numbers by most receiver's standards.
But this is Marqise Lee.
Two big drops - one which most certainly would have resulted in a touchdown - and a fumbled return recovered by Hawaii.
Lee sat out a few days during fall camp with a bone bruise suffered during practice. He wore a yellow no-contact jersey for the remaining time during camp.
USC head coach Lane Kiffin emphasized that Lee needed to get back on the field and get practicing. Although Lee won the 2012 Biletnikoff Award, given to the best receiver in college football, Kiffin emphasized that Lee had work to do - namely working on ball security issues that arose during the 2012 season.
Perhaps Kiffin also wanted Lee on the field because he needed his star quarterback to get as many reps as possible with both quarterbacks.
Lee was once outspoken about his desire for his head coach to name a starting quarterback. He now settles for the perfect PR answer, saying that as the receiver he needs to catch the ball - regardless of who is throwing it.
Lee said after the game that the drops were due to rust more than anything else as the Trojans played their first game since Dec. 31 at the Sun Bowl.
There's no real reason to worry about Lee's performance. However this may be another piece of evidence to point to the fact that Kiffin needs to choose one quarterback and go with him.
Lee isn't going to blame others for his mistakes, but the likelihood of those drops would undoubtedly fall if Lee knew what kind of ball to expect on each of his routes -- without thinking which quarterback is throwing it.
Sophomore receiver Nelson Agholor caught two passes for 35 yards including a touchdown. Tight end Xavier Grimble caught one pass for 18 yards. Tailback Tre Madden and fullback Jahleel Pinner each caught a pass under 10 yards.