Everybody knows about the Pac-12's prolific passing offenses, but it's a fairly well-kept secret that they'll be defended by some of the best defensive secondaries in the BCS this fall. Stanford has a dynamic safety duo in Ed Reynolds and Jordan Richards, while Oregon's peerless cornerbacks are led by Ifo Ekpre-Olomu and Terrance Mitchell. At USC, freshman safety Su'a Cravens is already being touted for a place in the Trojans' lineage of excellence at the position from Ronnie Lott to Troy Polamalu.
5. SECONDARY STARS
Oregon quarterback Marcus Mariota (8) carries the ball before he is run down by Southern California cornerback Nickell Robey (21) during the first half of an NCAA college football game, Saturday, Nov. 3, 2012, in Los Angeles. (AP Photo/Bret Hartman)