USA TODAY
It's pretty rare when all the attention of a college football weekend is on the Pac-12. That's the case Saturday in Week 12 of the season with four teams still alive to make the league's championship game – and there's an informal semifinal matchup between the quartet.
No. 6 Southern California is the highest-ranked team in the conference and is the lone representative left in the College Football Playoff race. The Trojans, who are one win in front of No. 10 Utah and No. 13 Oregon at the top of the standings, travel to No.