Oregon can start seriously thinking about a national title run. As for USC, just winning the Pac-10 could be a long shot at this point. Jonathan Stewart ran for 103 yards and two touchdowns and the fifth-ranked Ducks knocked off No. 9 USC 24-17 on Saturday. Dennis Dixon completed 16 of 25 passes for 157 yards. He also ran for 76 yards and a touchdown for Oregon. The Ducks, who came into the game ranked second nationally in total offense, had 399 yards against the Trojans.