Pac-12 helmet stickers: Week 8

So who deserves a helmet sticker for a job well done?

Tyler Gaffney, RB, Stanford: Gaffney rushed for a career high 171 yards -- 84 of which came in the fourth quarter -- in the Cardinal's 24-10 win over UCLA. He scored two TDs and was never tackled for a loss.

Jordan Richards, S, Stanford: Richards had a team-high 10 tackles as well as two interceptions in the win over UCLA.

Marion Grice, RB, Arizona State: Grice rushed for 158 yards on 21 carries -- 7.5 yards per rush -- with two touchdowns in the 53-24 win over Washington. He also caught four passes for 37 yards and a score. He now has 18 total touchdowns this year.

Michael Adkins II, RB, Colorado: The freshman rushed for 137 yards on 13 carries -- 10.5 yards per rush -- with four touchdowns in the Buffaloes 43-10 win over Charleston Southern.

Ka'Deem Carey, RB, Arizona: Carey was a workhorse in the win over Utah, rushing 40 times for 236 yards with a 44-yard touchdown that iced the game.

Marcus Mariota, QB, Oregon: Mariota was his usual self, completing 23 of 32 passes for 327 yards with two touchdowns and no interceptions. He also rushed for 67 yards, most of which came on a 57-yard TD run.

Byron Marshall, RB, Oregon: Marshall rushed for 192 yards on 21 carries -- 9.1 yards per rush -- with three touchdowns. He also caught two passes for 54 yards.

Sean Mannion, QB, Oregon State: Mannion completed 35 of 45 passes for 481 yards with four touchdowns and no interceptions in the blowout win over California.

Connor Halliday, QB, Washington State: The Cougars got blown out and Halliday threw four interceptions, but he set new NCAA records for both attempts (89) and completions (58), while passing for 557 yards with four TDs.