Oregon State freshman Jermar Jefferson has impressed so far in non-conference play, including a big 238-yard performance last weekend.
Stanford running back Bryce Love is out week 3 due to an undisclosed injury, but Cardinal head coach David Shaw is hopeful for Love's return to the field soon.
Former USC quarterback Sam Darnold made his NFL debut with the New York Jets on Monday Night Football and threw for 198 yards and two touchdowns.
Five Pac-12 teams are ranked in the Week 3 AP Top 25 poll: (9) Stanford, (10) Washington, (20) Oregon, (22) USC and (23) Arizona State.
USC running back Stephen Carr has overcome injury and plenty more on his quest to become the go-to back in the Trojans' offense.
Arizona football plays at Houston this weekend, and head coach Kevin Sumlin coached the Cougars for four years, going 35-17 with two conference titles.