With blowouts and thrillingly close contests, the 2012 college football season has delivered constant excitement to fans, and that continued throughout Saturday's slate of games. 

In a shocking turn of events, both No. 1 Kansas State and No. 2 Oregon lost. Baylor took down the Wildcats, while No. 13 Stanford upset the Ducks. 

There will be seismic shifts in the BCS standings when they are released on Sunday. 

In other action, No. 17 UCLA came out firing against No. 18 USC and built a 24-0 lead that ended up being enough for the Bruins to hold off their archrivals for a 38-28 victory. 

Here are all the best images from the action this week. 

 

No. 1 No More

Kansas State rose to the top of the BCS after Alabama was shocked by Texas A&M, but for the second week in a row, the No. 1 team failed to defend its rank. The Wildcats were torched by the Baylor running game in the 52-24 win, and Glasco Martin scored three touchdowns.

Hi-res-6759140_crop_exact Tim Heitman-US PRESSWIRE

Collin Klein had the Heisman Trophy and a national championship within his grasp, but his dream season was turned on its head in this game. He accounted for three touchdowns but also threw three interceptions. 

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As you may have guessed, Waco went nuts after the final whistle blew.  

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Ducks Disappoint at Home

Shortly after Kansas State's shocking loss, Stanford's Jordan Williamson kicked a 37-yard field goal in overtime to hand Oregon its first loss of the season, with the game ending 17-14. This left Oregon fans despondent, as Bleacher Report showed us via Twitter.

But the play of the game was Cardinal tight end Zach Ertz's game-tying touchdown catch. The reception was controversial, and it was reviewed, but the referees decided it was a touchdown. This is an image that will be burned into Ducks fans' brains for all eternity. Once again, Bleacher Report came through with the image.

 

Routs, Blowouts and Landslides

However you want to say it, several teams faced highly ranked opponents and got creamed. We'll start with No. 4 Alabama beating Western Carolina 49-0. A failed trick play that resulted in a fumble and a 57-yard return for a touchdown by the Crimson Tide's Deion Belue summed up the Catamounts' day. 

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Then there were Johnny Manziel's five touchdowns that helped No. 8 Texas A&M jump out to a 47-0 lead over Sam Houston State. The Aggies then went into cruise control and eventually won 47-28. Texas A&M Football shared this image via Twitter that hints at possible implications of Manziel's performance.

No. 3 Notre Dame also got in on the action and sent Wake Forest home after a 38-0 walkover. This touchdown catch by tight end Tyler Eifert was one of many highlights for the Fighting Irish. The celebration did not really start until later in the night though, as Notre Dame is now the favorite to be nation's new No. 1 team.

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No. 5 Georgia rounded out the routs with its 45-15 win over Georgia Southern. Quarterback Aaron Murray spread the ball around in this trouncing and threw four touchdown passes.  

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Los Angeles Belongs to the Bruins

While USC has owned its rivalry with UCLA in recent years, the 2012 edition of this battle presented an extremely even matchup. That did not appear to be the case, though, when the Bruins took a 24-0 lead in the first half.

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But the Trojans mounted a comeback, and a Marqise Lee touchdown brought USC within three points. Ultimately, however, a 29-yard touchdown run from Johnathan Franklin sealed UCLA's big win. 

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This victory was important for not just the UCLA players, but the entire student body. The athletes that got the job done against USC then went to celebrate with their peers. ESPN's Arash Markazi shared the festivities via Twitter.

 

Ohio State, LSU Survive Thrillers

The Buckeyes' undefeated season was in serious jeopardy as Wisconsin took them to overtime. The Badgers had a chance to tie the game with just under three minutes remaining, but star running back Montee Ball fumbled on the goal line when a score would have given him the NCAA career record for touchdowns.

Hi-res-6757318_crop_exact Jeff Hanisch-US PRESSWIRE
The roller coaster continued as Wisconsin scored with just seconds remaining to tie the game. But Carlos Hyde's touchdown run proved to be the game-winner, and OSU prevailed 21-14. 

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No. 7 LSU faced a spirited fight from Ole Miss and needed an 89-yard punt return from Odell Beckham to tie the game in the fourth quarter before Jeremy Hill's one-yard run gave it a 41-35 victory.  

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After another fantastic set of matchups across the country, fans can only hope that next week provides as many memorable moments as these games did.