A look at five of the key matchups in the Rose Bowl between No. 1 Southern California and No. 4 Michigan:

USC WR Mike Williams vs. Mich. CB Jeremy LeSueur and S Marlin Jackson:

Stopping the Trojans' All-America receiver will be the toughest task for Michigan's defense. Williams doesn't have breakaway speed but can shield off defenders and make acrobatic catches. LeSueur, the Wolverines' top cover corner, probably will get most chances in man coverage, although Jackson, a former cornerback, will help with double-teams. But Michigan can't double-team too much or Keary Colbert, Steve Smith and a trio of running backs will do damage.

USC OT Jacob Rogers vs. Mich. OLB Pierre Woods:

Woods is Michigan's best pass rusher and must disrupt QB Matt Leinart's timing to give the Wolverines' defensive backs a chance. When Leinart has time, he has been able to pick apart defenses. Woods often will go up against Rogers, an All-America tackle who anchors a line that allowed 14 sacks. Michigan has 28 sacks, and Woods had six of them.

USC CB Will Poole vs. Michigan WR Braylon Edwards:

The Trojans have been susceptible to the pass, allowing 276.7 yards a game, including 485 in the regular-season finale against Oregon State. Poole is USC's best cover corner and will be counted on to shut down Edwards, who has 75 catches for 1,031 yards and 14 scores this season. Edwards has seven TD catches in his last four games.

USC defensive line vs. Michigan RB Chris Perry:

The strength of the Trojans' defense will be counted on to control the nation's top running back. Perry ran for 1,589 yards and scored 19 touchdowns to win the Doak Walker Award. The Trojans allowed only 1.9 yards a carry this season. If All-American Kenechi Udeze, Shaun Cody and Co. need help from the safeties to control Perry, that will open up the passing game for John Navarre. USC must watch out for Perry on screen passes; he set a school record for running backs with 42 catches.

USC punter Tom Malone vs. Michigan PR Steve Breaston:

Malone averages 49.2 yards a punt and the Trojans have a 43.5 net average - best in the nation. That will be tested against the dangerous Breaston, who averages 14.1 yards a return and took two back for scores.

- Associated Press