Here’s how Mark Sanchez’s debut compares to Carson Palmer, Matt Leinart and John David Booty. Impressively, none of those three threw an interception in their first game.
UPDATED: These stats were supplied to all media by USC sports information office. I posted them because I figured the readers would be interested. But as usual, I see the first commenters could not simply process the information. Will they get mad at USC now?

Carson Palmer 1998 (Washington)

18-31 58 percent 279 yards 1 TD O INT

Matt Leinart 2003 (Auburn)

17-30 57 percent 192 yards 1 TD 0 INT

John David Booty 2006 (Arkansas)

24-35 67 percent 261 yards 3 TDs 0 INT

Mark Sanchez 2007 (Arizona)

19-31 61 percent 130 yards 1 TD 2 INT