Fifteen teams are still unbeaten in Week 7 of the 2022 college football season, but that number is guaranteed to shrink by Week 8. Three games on Saturday's schedule feature a pair of teams that both have perfect records.

No. 3 Alabama visits No. 6 Tennessee in a key SEC matchup. No. 5 Michigan hosts No. 10 Penn State in a game that could end up deciding one half of the Big Ten Championship Game. The highest-ranked teams in the Big 12 face off when No. 8 Oklahoma State plays at No. 13 TCU.

Tennessee is the one undefeated team that is an underdog at home. According to the latest betting lines at FanDuel Sportsbook, Alabama is favored by a touchdown.

The Crimson Tide are arguably the best team in college football. Alabama received 11 first-place votes in the most recent AP Top 25 Poll. Nick Saban's team was ranked preseason No. 1 after losing in last season's national championship game.

The Volunteers' chances of pulling off the upset could hinge on the status of Bryce Young. Alabama's quarterback is dealing with a shoulder injury, and it's unknown if he'll be under center.

Tennessee quarterback Hendon Hooker is a Heisman Trophy candidate. The quarterback has thrown for 1,432 yards, 10 touchdowns and no interceptions. The Volunteers lead the country in total offense.

Michigan is favored by 6.5 points over Penn State. The Wolverines rank fifth in scoring defense, giving up just 11.3 points per game. Blake Corum is fourth in the country with 735 rushing yards.

Like Tennessee, Penn State wasn't ranked at the start of the season. The Nittany Lions have won four straight games by double digits. Penn State has the fifth-ranked rushing defense.

Oklahoma State is getting 3.5 points and is the only underdog playing against an opponent ranked lower in the polls. TCU has scored at least 55 points in both of its home games. The Horned Frogs are coming off consecutive wins against ranked opponents.

TCU is third in total offense. Both TCU and Oklahoma State average 46.4 points per game, tied for third in the nation.

Jim Harbaugh Michigan Football
Head coach Jim Harbaugh of the Michigan Wolverines listens in on a huddle during the Michigan Football Spring Game on April 1, 2016 at Michigan Stadium in Ann Arbor, Michigan. Gregory Shamus/Getty Images