Flaws that could waylay contenders

— -- Pick your poison.

Is it a weak defense? A one-dimensional offense? A star quarterback who can't stay out of trouble? Whatever it is, every team in the top five has one -- a Playoff Kryptonite. Each of the top contenders in The Associated Press Top 25 has a glaring weakness that could keep it out of the College Football Playoff. Considering what we've seen the past four weeks, there hasn't been one team that has truly separated itself from the rest -- let alone four teams.

Here's a look at the Playoff Kryptonite that could cripple the current contenders:

1. Florida State: No running game. Florida State had 13 rushing yards against Clemson. None of the Seminoles' running backs have cracked the 70-yard mark yet. If it wasn't for

• Embattled coaches: Virginia Tech's Frank Beamer, Michigan's Brady Hoke, and Muschamp all took it on the chin this week, and so did any playoff dreams. The Michigan Man lost at home. To Utah. The Hokies lost at home. Again. More than anything, Muschamp lost a job-saving opportunity.

CONFERENCE CALL

In a battle of the unbeatens, here's who's left among the Power 5 conferences and Notre Dame: Big Ten: 2 (PSU, Nebraska); Big 12: 3 (OU, Baylor, TCU); ACC: 4 (FSU, NCSU, Duke, GT); SEC: 5 (Texas A&M, Alabama, Auburn, Ole Miss, Mississippi State); Pac-12: 7 (Oregon, Washington, Oregon State, Arizona, ASU, UCLA; Utah) and Notre Dame.