Week 6 was college football's wildest slate of games yet, with an incredible 11 of the Top 25 teams losing (including five top-10 teams).

Expect Oregon, Alabama, Oklahoma and Texas A&M to fall, but who replaces them at the top? Florida State is still undefeated, as are Auburn, Ole Miss, and Mississippi State. Could Notre Dame sneak into the top four after a win over Stanford? What about TCU, sitting at 4-0 after upsetting the Sooners? This is the first time this college football season that there are real questions surrounding the week's new polls.

We'll update this post with all the Top 25 polls as they come out Sunday afternoon, capping it off Monday with our composite ranking, combining all four of the rankings. [Update: everything is here.]

Composite Average AP Coaches F/+ Sagarin 1 Auburn 2.5 1 Florida State Florida State Ole Miss Auburn 2 Ole Miss 2.75 2 Auburn Auburn Mississippi State Oklahoma 3 Mississippi State 4.75 3 Mississippi State (tie) Baylor Oklahoma Ole Miss 4 Alabama 5.5 4 Ole Miss (tie) Ole Miss Alabama Alabama 4 Baylor 5.5 5 Baylor Notre Dame Auburn Baylor 6 Oklahoma 6.25 6 Notre Dame Mississippi State Oregon Texas A&M 7 Florida State 6.75 7 Alabama Alabama TCU TCU 8 Notre Dame 7.75 8 Michigan State Michigan State Stanford Mississippi State 9 TCU 8.75 9 TCU Oklahoma Baylor Notre Dame 10 Oregon 10 10 Arizona Georgia UCLA Georgia 11 Michigan State 11 11 Oklahoma Oregon Notre Dame Oregon 12 Texas A&M 12.5 12 Oregon TCU Florida State UCLA 13 Georgia 13.5 13 Georgia Arizona Ohio State Florida State 14 UCLA 14.25 14 Texas A&M Texas A&M Michigan State Michigan State 15 Ohio State 15 15 Ohio State Ohio State Marshall Stanford 16 Stanford 17.5 16 Oklahoma State Kansas State Texas A&M LSU 17 Arizona 18.25 17 Kansas State UCLA Louisvlle Ohio State 18 Kansas State 21.25 18 UCLA Oklahoma State Virginia Tech Clemson 19 Clemson 22.25 19 East Carolina East Carolina Arizona USC 20 Nebraska 22.5 20 Arizona State Arizona State Clemson Florida 21 LSU 24.25 21 Nebraska Nebraska Georgia Kansas State 22 Louisvlle 25 22 Georgia Tech Stanford USC Arkansas 22 USC 25 23 Missouri Georgia Tech LSU Nebraska 24 Oklahoma State 25.5 24 Utah Missouri California Wisconsin 25 Marshall 26.5 25 Stanford Clemson Nebraska Louisvlle

The four rankings we use:

Hey, we finally joined Facebook!

The Associated Press Top 25: The longest-running and best-respected human poll. Didn't have any official bearing on the latter years of the BCS, and won't have any official bearing on the Playoff. Expect it to set the course for the committee, however, as most outlets (including SB Nation) will use the AP's rankings as the standard until the committee takes over in October. Usually comes out Sundays around 2 p.m. ET.

The USA Today Coaches Poll: Formerly part of the BCS, and now just a poll. It tends to be more conservative than the AP's. Though polling athletic departments in order to rank other athletic departments is dubious, we still want multiple human polls in here, and it's the other big one. Releases early Sunday afternoons.

Jeff Sagarin's Sagarin Rating: An early-morning insta-ranking that combines three of Sagarin's computer formulas into one. This is not the formula the BCS used, which excluded margin of victory.

Football Outsiders' F/+ rating: A synthesis of ratings by smart persons Bill Connelly and Brian Fremeau and our personal go-to overall team stat. It tends to come out later than the others.

Last week's composite Top 25:

Composite Average AP Coaches F/+ Sagarin 1 Alabama 1.5 1 Florida State Alabama Alabama Alabama 2 Oregon 2.75 2 Oregon Florida State Oregon Oklahoma 3 Oklahoma 3.25 3 Alabama Oklahoma Stanford Oregon 4 Florida State 4.5 4 Oklahoma Oregon Oklahoma Auburn 5 Auburn 5.5 5 Auburn Auburn Ole Miss Texas A&M 6 Texas A&M 7.25 6 Texas A&M Baylor Florida State UCLA 7 Baylor 7.5 7 Baylor Texas A&M Mississippi State Georgia 8 UCLA 9.5 8 UCLA Notre Dame Auburn Baylor 9 Stanford 10 9 Notre Dame UCLA Baylor Florida State 10 Ole Miss 10.5 10 Michigan State Michigan State LSU Stanford 11 Michigan State 11 11 Ole Miss Ole Miss Texas A&M Michigan State 12 Georgia 12 12 Mississippi State Georgia USC Notre Dame 13 Notre Dame 12.25 13 Georgia Stanford Michigan State LSU 14 LSU 13.25 14 Stanford Mississippi State Louisville USC 15 Mississippi State 14.25 15 LSU LSU UCLA Ole Miss 16 USC 15.5 16 USC Wisconsin Georgia Wisconsin 17 Wisconsin 17 17 Wisconsin Nebraska Ohio State Ohio State 18 Ohio State 18 18 BYU Ohio State TCU Kansas State 19 East Carolina 21.5 19 Nebraska BYU Wisconsin Florida 20 BYU 21.75 20 Ohio State USC Notre Dame Clemson 21 Nebraska 22 21 Oklahoma State East Carolina West Virginia Oklahoma State 22 Oklahoma State 22.5 22 East Carolina Kansas State Clemson South Carolina 23 Kansas State 22.75 23 Kansas State Oklahoma State Virginia Tech BYU 24 TCU 23.75 24 Missouri Arizona State Arkansas Mississippi State 25 Clemson 24.5 25 TCU TCU Oklahoma State Texas

Follow @SBNationCFB Follow @SBNRecruiting