Last season the 4-7 Razorbacks averaged a nation's-worst 56.5 rushing yards. Under new coach Houston Nutt, Arkansas (4-0) has rushed for more yards (767) in four games than it ran for all of last season.
The Wildcats are the only Pac-10 team that has never gone to the Rose Bowl, but quarterbacks Keith Smith and Ortege Jenkins could help 5-0 Arizona break that streak.
Coming off the Buffaloes' worst season in 13 years, coach Rick Neuheisel found a quarterback in Mike Moschetti, and Colorado is 5-0 going into this week's showdown with fifth-ranked Kansas State.
The Herd didn't lose its thunder when All-America receiver Randy Moss left for the NFL. After a 31-17 victory over Miami of Ohio, Marshall is 5-0 and could be headed for a perfect season.
North Carolina State
With victories over Florida State and Syracuse, the Wolfpack has a chance for its second ACC title since 1973, when Lou Holtz roamed the sideline in Raleigh.
The 4-0 Ducks (above) are thinking Rose Bowl thanks to the leadership of senior QB Akili Smith (357 yards passing, four TDs against Stanford).
New coach Dennis Franchione has given the Horned Frogs new life, taking over a 1-10 team and winning three of his first four games at the helm, including Saturday's 19-16 overtime victory against Vanderbilt.
The Red Raiders have a Ricky Williams, a potent offense and, after their 5-0 start, a shot at winning the Big 12 South.
After last year's 7-4 finish, the Green Wave's best in 18 years, Tulane is 4-0 and ranked for the first time since 1979.
The 4-0 Hokies sit atop the Big East thanks to an offense that has seen seven players score at least one touchdown.