Alabama and Clemson should square off in the College Football Playoff for a fifth consecutive season, but potential defensive issues could keep both heavy favorites from winning it all.
They're not alone, though. All of the teams with legitimate aspirations of being chosen by the CFP selection committee have at least one major red flag that could derail their best-laid plans.
Both Big 12 contenders (Oklahoma and Texas) need to address glaring concerns on defense. Both Big Ten contenders (Michigan and Ohio State) have even larger question mark on offense. And the special teams for LSU and Oregon might be the furthest thing from special.