What we learned: Week 4

Here's what we learned about Florida after the Gators' 31-17 win over Tennessee:

Tyler Murphy has to stay healthy: With Jeff Driskel going down with a broken leg that will end his 2013 season, the Gators now turn to fourth-year junior Tyler Murphy. He entered the game with no official passes on his résumé and left with fans chanting his name. He passed for 134 yards, rushed for another 84 and had two total touchdowns. But it's very important that Murphy stay upright going forward. If you thought Florida's quarterback depth was bad when Driskel was playing, it's even worse now. Neither Skyler Mornhinweg nor Max Staver have any college experience. Murphy played well, but he has to stay healthy or the Gators' offense could truly be sunk. That means the scrambling quarterback will have to get used to sliding when he takes off.

There's a battle at running back: Matt Jones entered the season as the Gators' starting running back, but coach Will Muschamp said after Saturday's game that he plans to play the hot hand at running back going forward. Right now, junior Mack Brown has the hot hand. He carried the ball a game-high 24 times for 86 yards and had a touchdown. He was more effective in between the tackles and was able to break free from tackles more often than Brown, who rushed for just 49 yards and a touchdown on 12 carries.

Florida's secondary is full of depth: Injuries and an ejection didn't stop the Gators' secondary from having another solid outing. Starting cornerback Marcus Roberson was out with a knee injury, while fellow starter Loucheiz Purifoy left the game early with a leg injury. Brian Poole was ejected in the fourth quarter after being called for targeting. Still, the Gators held Tennessee's two quarterbacks to just 154 yards and a touchdown on 14 of 34 passing. Florida also recorded four interceptions. Coaches were able to move guys all around the secondary, too. Freshman corner Vernon Hargeaves III had another impressive outing, registering three pass breakups. Florida gave up a touchdown pass late on a blown assignment, but the secondary really showed it's quality depth inside the Swamp Saturday.