College football has, and will always be, full of upsets each season. This year has been no different as two No.1 ranked teams have already lost in back-to-back weeks.
But No.1-ranked teams losing aren't the only upsets that happen. Any ranked team is capable of falling victim to the dreaded upset.
This week, there are a few teams that should be on the lookout for an upset.
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The Sooners are the new No.1 team in college football, and that alone makes them eligble for an upset after what has taken place the past two weeks.
However, Oklahoma is facing No.11 Missouri, who, like Oklahoma, is undefeated. Both teams have great passing games and both rank in the top 20 of the FBS rankings for passing yards per game.
But the Tigers have the second-ranked defense in terms of points allowed, only giving up 10.8 points per game.
The Sooners have their work cut out for them this week and definitely need to come into Saturday's game prepared for a fight, or they will be the next No.1 team to be upset.
Ohio State is the latest No.1 team to lose after falling 31-18 to No.13 Wisconsin Badgers.
If they aren't careful, they may taste defeat for a second week in a row.
The Buckeyes are going up against Purdue (4-2 overall and 2-0 in the Big Ten). The Boilermakers are a tough-nosed team that definitely won't back down from the challenge of facing the Buckeyes on the road.
Purdue ranks 27th in the FBS at rushing, averaging 202.3 yards per game. Ohio State ranks 24th with 208.4.
This game will be won by whichever team can establish their run game first and pound the ball to a win.
Florida State came off their big win against then-ranked No. 13 Miami (FL) Hurricanes, and almost got upset by the Boston College Eagles at home.
Now they are going up against a much better team in the Wolfpack (5-2 overall, 2-1 ACC).
North Carolina State has the seventh-best pass offense in the FBS, with 312.6 yards per game, and score 36.0 points per game.
The Seminoles defense only allows 16.1 points per game. Under new defensive coordinator Mark Stoops, they have been inconsistent at times, but when they're on the same page, it's scary.
This will be a tough game that will be a battle between quarterbacks Christian Ponder and Russel Wilson.
West Virginia has been steady throughout the season, with their only loss coming against No.6 LSU Tigers.
The Mountaineers rely much more on the pass than the run this year, and QB Geno Smith has played well so far.
Syracuse is playing much better than they have in recent memory and are currently 4-2 overall and 1-1 in the Big East.
Neither team is a great offensive threat, as both teams ranking in the 60's in passing and rushing yards per game. However, West Virginia ranks third in the FBS in scoring defense, only giving up 12.3 points per game.
If the Orange can find some offensive punch, they could give West Virginia more than just a scare.
Kansas State has been great this season, especially on the ground.
They currently rank 15th in the FBS with 221.7 yards per game. The big reason for the Wildcats' strength on the ground is senior RB Daniel Thomas.
Thomas was getting early Heisman consideration, and rightfully so. He ranks ninth in FBS with 782 rushing yards and seven touchdowns.
Baylor (5-2 overall, 2-1 Big 12) has a star on offense of their own in junior QB Robert Griffin III. He ranks fourth in the FBS with 1,969 yards on the season.
The Bears are 13th in passing yards, averaging 301.4 yards per game.
Whichever star can carry their team will emerge from this game victorious.
Here are some other games that could end in upset if the team overlooks there opponent:
Mississippi Rebels vs. No. 23 Arkansas Razorbacks—The Rebels' run game goes up against Ryan Mallett and Arkansas' potent pass attack.
Mallett left the last game against No. 4 Auburn with a concussion. If he's not back to his old self, the Rebels may leave Fayetteville with a win.
Iowa State Cyclones vs. No. 19 Texas Longhorns—Texas just got back into the top 25 after a win over No. 16 Nebraska Saturday.
However, this isn't your regular Longhorns squad, and they are capable of falling to a lesser opponent, as seen in their game against UCLA.
Brandon Jefferson is a student at High Point University and a Bleacher Report Writing Intern. You can follow him on Twitter @Dotcom_2.