2026 college football Top 25: X factors for each team - ESPN

The best teams have a greater margin for error than the rest but even for them, a season can swing based on the performance of a newcomer, a key unit or a new coordinator.

For each of ESPN's preseason Top 25 teams, we looked at an X factor that could go a long way in determining whether the season will be a success or a disappointment.

With the 2026 season fast approaching, here are some of the important freshmen, transfers and coaches to keep an eye on.

2025 record: 12-2, 9-0 Big Ten

X factor: WR Chris Henry Jr.

Once again, the Buckeyes landed the No. 1 wide receiver prospect in the country in Henry, who was ESPN's No. 7 overall recruit in the class of 2026. Can Henry make an impact as a true freshman, alongside All-American Jeremiah Smith and veteran Brandon Inniss? At 6-foot-5, Henry has the tools to become a dangerous downfield and red zone weapon for quarterback Julian Sayin. Defenses will be loading up to slow Smith, which figures to give Henry plenty of favorable opportunities to show he can be Ohio State's next great wide receiver. — Jake Trotter

2025 record: 13-2, 8-1 Big Ten

X factor: S Koi Perich

Perich's arrival in Eugene follows a blueprint that worked a year ago, when Dillon Thieneman also transferred from within the Big Ten. Perich was a standout performer the past two seasons at Minnesota — much like Thieneman had been at Purdue — and gives the Ducks an experienced player to backfill after Thieneman was selected in the first round of the NFL draft. It remains to be seen how the Ducks will fully utilize Perich, but he contributed in the return game and on offense for Minnesota, showcasing what a special athlete he is. — Kyle Bonagura

2025 record: 12-2, 8-1 SEC

X factor: WR Talyn Taylor

A five-star recruit