After five weeks there is enough information to dive deeper into which teams have exceeded expectations and which have failed to live up to them.

Football Power Index’s preseason rankings accounted for past performance, returning starters (looks at quarterbacks separately), coaching tenure and recruiting rankings.

Biggest Surprises

Below are the top five risers in FPI rank since the preseason.

We have limited the list below to Power Five teams, but it should be noted Georgia Southern from the Sun Belt had the biggest rise, 53 spots to 71st since the preseason.

Biggest Risers in FPI Rank
Power Five Teams

• Arkansas has climbed into the FPI top 20 after beginning the season ranked 50th. The Razorbacks are adding 16 expected points per game to their scoring margin on rushing plays, the most of any team in the FBS.

• After losing its final eight games of the 2013 season, NC State began the year 4-0 before losing to Florida State 56-41 on Saturday. The Wolfpack were in control of that game against FSU with an average in-game win probability of 56 percent throughout.

• West Virginia is 2-2 but has played the fourth-hardest schedule in the FBS, including close games against Alabama and Oklahoma. Led by Clint Trickett’s 16th-ranked Total QBR, West Virginia ranks 11th in offensive efficiency after ranking 88th last year.

• Boston College has had an up-and-down year, but its win against USC was the second-most “unlikely” win of the season by an FBS team against another FBS team based on FPI’s pregame predicted win percentage (behind Akron’s win at Pittsburgh). That win caused the Eagles to rise significantly in FPI.

• After losing Johnny Manziel and five other offensive starters, Texas A&M was expected to take a step back offensively. The Aggies rank second in offensive efficiency, and Kenny Hill has the fourth-best Total QBR in the nation. The defense has also improved, resulting in a 5-0 start and the second-best FPI in the nation.

Biggest Disappointments

Below are top five fallers in FPI rank among Power Five teams since our preseason rankings.

Biggest Decline in FPI Rank
Power Five Teams

• North Carolina was one of the youngest teams in the nation last year, and FPI thought that youth would mature this season. The Tar Heels began the season with the second-best chance to win the ACC behind Florida State, but after an unimpressive start, they now have the 10th-best chance to win the conference.

• We began the season high on Michigan because the Wolverines returned 15 starters (including its QB), brought back its coach and had a top 25 average recruiting ranking in the past four years. The Wolverines have the worst turnover margin in the nation (-12), rank 90th in offensive efficiency and have fallen out of the FPI top 50 after its loss to Minnesota on Saturday.

• Texas Tech has the worst defensive efficiency rating of any Power Five school. The Red Raiders are currently projected to win 4.8 games this season, which is 2.6 less than their preseason projections.

• Despite a 4-1 record, Iowa has struggled to dominate its lesser opponents. The Hawkeyes have played three FBS teams currently ranked outside of the top 75 of FPI and an FCS team. They went 3-1 in those games with an average scoring margin of 5.8 points per game. Iowa’s chance of winning the Big Ten has fallen from 8.4 percent in the preseason (5th in Big Ten) to 0.7 percent (9th in Big Ten).

• Vanderbilt finished 9-4 last season but had to replace its quarterback, 11 other starters and its coach. The Commodores’ biggest issues have been on offense, where they rank 123rd in efficiency and have the most turnovers (14) in the nation.