Week 4 brought some series surprises, and the dramatic end of Les Miles' tenure at LSU.Irish eyes werent smiling, and neither Hank Aaron Jersey were those in Georgia. Tenne see snapped its 11-year losing streak against Florida while Wisconsin punched Sparty in the mouth. In the Pac 12, Stanford and Washington both found a way to win on the road.Here are the top playoff contenders from each conference as we head into monster matchups in Week 5.MORE: ACCTop Contenders: No. 3 Louisville, No. 5 Clemson, No. 14 Miami, No. 12 Florida StateWhat We Learned: The ACC's best rolled Saturday. While Miami had a bye week, Louisville, Clemson and Florida State outscored the competition 140-70. What To Watch: Clemson handled undefeated Georgia Tech on the road last week. Now, the competition skyrockets when Louisville comes to town Saturday night. Louisville has the top scoring offense in the nation averaging 63.5 points per game. Can Clemsons No. 5 ranked defense slow the Cardinals in Memorial Stadium?Big 12Top Contenders: No. 13 Baylor, No. 22 Texas, No. 21 TCU, West VirginiaWhat We Learned: After dispatching Northwestern State, SMU and Rice in the nonconference calendar, Baylor continues to look the part of a conference champion. Seth Ru sell scorched Oklahoma State for 387 yards and four touchdowns. Ru sell has already pa sed for 13 touchdowns with justfourinterceptions. Dont sleep on West Virginia as a contender either, they quietly sit at 3-0 after beating BYU.What To Watch: TCU and Oklahoma clash in Fort Worth, Texas. Can the Sooners bounce Tyler Flowers Jersey back from two tough early season lo ses to Houston and Ohio State?Big10Top Contenders: No. 2 Ohio State, No. 4 Michigan, No. 8 Wisconsin, No. 15 Nebraska, No. 17 Michigan State,What We Learned: Wisconsin is a legitimate title contender this year. The Badgers took care of busine s against Sparty in East Lansing, Mich. While Michigan State took a serious step back, Phil Niekro Jersey they still control their own destiny with games against Michigan and Ohio State. Meanwhile, a dominant Wolverines team crushed Penn State. The seat is getting warm for Penn State coach James Franklin.What To Watch: Wisconsin and Michigan clash in Ann Arbor, Mich. The Wolverines average 52 points pergame, the stingy Badgers only allow 11.8. Something has got to give.Pac12Top Contenders: No. 7 Stanford, No. 10 Washington, No. 18 Utah, Arizona StateWhat We Learned: The juggernauts of the North found a way to win. Stanford scored the go-ahead touchdown with 24 seconds left to down a game effort from UCLA. Washington survived an overtime test from Rich Rodriguez'upset-minded Wildcats. Meanwhile, Utah and Arizona State improved their records to 4-0. What To Watch: In a Friday night tilt, Stanford heads to Seattle to take on the Huskies. The winner will be in the drivers seat in the Pac 12 North.SECTop Contenders: No. 1 Alabama, No. 9 Texas A&M, No. 11 Tenne see, No. 20 Arkansas, No. Brandon McCarthy Jersey 25 GeorgiaWhat We Learned: Times are a changin' at LSU after a disappointing 2-2 start and a sputtering offense. Georgia is not yet ready for prime time after being taught a le son in a 45-14 schooling by Ole Mi s. Tenne see is finally over the hump after 11years of losing against Florida. Texas A&M has one of the strongest rushing attacks in the SEC, rumbling for 366 in an impre sive win against Arkansas.What To Watch: Can Tenne see keep the momentum going in Athens against a Bulldog team looking to bounce back? How will LSU respond against Mi souri without Les Miles?Group of Five/IndependentsTop David Justice Jersey Contenders: No. 6 HoustonWhat We Learned: Notre Dame is in trouble. Falling to 1-3 after losing to Duke at home is not what Brian Kelly envisioned to start the season. The path doesnt get easier. After two road games against Syracuse and NC State, the Irish take on Stanford and Miami (Fla.).What To Watch: After beating Texas State by 61, high-flying Houston hosts a 2-2 Connecticut. Connecticut needed a last second field-goal to beat Maine earlyier this season. This one is going to get ugly.