There's truly nothing more exciting this time of year than football season. As we wind down another exciting week in college football, Football Nation takes an in-depth look at each Top-25 team's best player through the first two weeks.

Which preseason Heisman hopefuls have lived up to the summer hype? Which players have disappointed? Is AJ McCarron still worthy of Heisman consideration? What about Notre Dame? Have the mighty fallen in South Bend after a devastating loss to Michigan? Is Marcus Mariota or De'Anthony Thomas Oregon's best player?

Click below to find out how Football Nation grades the Top 25 team's best players.