Top 25 player countdown: No. 15

No. 15. Sean Renfree, QB, Duke

2010 numbers: He started 11 of the 12 games he played in last year and completed 61.4 percent of his passes for 3,131 yards, 14 touchdowns and 17 interceptions. He became only the fourth quarterback in school history to eclipse the 3,000-yard passing mark. He was one of seven sophomores nationally to throw for over 3,000 yards. He three for over 300 yards in five games last year and completed 28 of 30 passes against Navy to set a school single-game record for pas completion percentage.

Previous ranking: Not ranked.

Making the case for Renfree: His improvement over the last five games of 2010 was noticeable and measurable. He has a great grasp of Duke’s offense and he’s got great poise and doesn’t get rattled or frustrated easily. Instead, he goes back into the film room and works to be better. He has improved his arm strength and ranks first on Duke’s career chart in pass completion percentage. He threw 15 of his 17 interceptions in the first seven games and then only two picks over the last five. He also has one of the ACC's top receiver tandems to work with in Conner Vernon and Donovan Varner.

No. 16 Chase Minnifield, CB, Virginia

No. 17 Cam Johnson, DE, Virginia

No. 18 Greg Reid, CB, Florida State

No. 19 Ray-Ray Armstrong, S, Miami

No. 20 Lamar Miller, RB, Miami

No. 21 Conner Vernon, WR, Duke

No. 22 Jarrett Boykin, WR, Virginia Tech

No. 23 Omoregie Uzzi, OG, Georgia Tech

No. 24 Andre Ellington, RB, Clemson

No. 25 EJ Manuel, QB, Florida State