As spring practices wrap up across the country, Andy Staples of SI.com ranked the top 25 college football teams entering the 2009 season. You can see Staples’ rankings by clicking the link above.

I’m intrigued by a couple of teams on his top 25, most notably Ole’ Miss (No. 7), Ohio State (No. 9) and TCU (No. 11).

Ole’ Miss is going to give a lot of SEC teams trouble this year with 16 total starters (8 on offense, 8 on defense) returning from last year, including quarterback Jevan Snead, who enters his second full season as a starter after throwing 26 touchdowns last season. They lost key components in offensive tackle Michael Oher and defensive tackle Peria Jerry, but they essentially return the same team that beat Florida, LSU and stomped Texas Tech in the Cotton Bowl last year. (Not to mention also gave Alabama a game in Tuscaloosa.)

Out of the teams Staples ranks in his top 10, Ohio State has the fewest returning starters at nine. But quarterback Terrelle Pryor will only continue to improve with more playing time and running back Dan “Boom” Herron will ease the loss of Beanie Wells to the NFL. The Buckeyes should also have one of the best defensive fronts in the Big Ten, with end Lawrence Wilson and tackle Cameron Heyward set to return.

TCU turned a lot of heads last year after compiling an 11-2 record, including impressive wins over BYU and Boise State in the Poinsettia Bowl. They had one of the fastest defenses in the nation last year and they held opponents to a staggering 11.3 points per game. But they lost seven starters on the defensive side of the ball, which was obviously their strength, so it’ll be interesting to see how they’ll stack up with Utah again in the Mountain West.

Another team to keep an eye on is Oregon State, who returns two explosive playmakers in running back Jacquizz Rodgers and wide receiver James Rodgers. But as Staples writes in his top 25 rankings, quarterback Lyle Moevano is coming off offseason shoulder surgery and will battle senior Sean Canfield in preseason practice.

Pete Carroll and the USC Trojans have a bad case of déjà vu going on right now. Two years ago the Trojans traveled to Corvallis and were shocked by an unranked Oregon State team that knocked them out of the top five.

On Thursday night, the Beavers shocked the world once again, beating top ranked USC 27-21 on the strength of freshman running back Jacquizz Rodgers, who finished with 186 yards and two touchdowns on 37 carries.

At 5’6” and180 pounds, Rodgers proved to be quite a handful for USC’s defense, a unit highly recognized as one of the best in the nation. The Trojans simply couldn’t get good leverage on the smallish Rodgers, who constantly broke tackles all night long. USC defenders often came in too high while trying to bring Rodgers down and the frosh back made them pay.

Offensively for USC, quarterback Mark Sanchez finished with solid numbers (18/29, 227 yards, 3 TDs), but was highly inaccurate on a drive when the Trojans were backed up late in the fourth quarter and needed one score to tie the game at 21. Then on a 1st and 10-play from USC’s 14-yard line, Sanchez overthrew one of his receivers and was picked off by Greg Laybourn, who took the gift back to the Trojans’ 2-yard line. On the first play after the turnover, Rodgers scored his second touchdown of the game, pushing the Beavers’ lead to 27-14 with less than three minutes remaining.

After a 50-yard kickoff return by Ronald Johnson set the Trojans up with a 1st and 10 from the Oregon State 40-yard line, Sanchez drove USC the rest of the field and connected with Patrick Turner to cut the Beavers’ lead to 27-21. But the ensuing onsides kick failed and Oregon State was able to run out the clock.

It was an amazing upset. The Beavers were more aggressive, made bigger plays and kept the high-powered Trojans’ offense off the field. USC also shot itself in the foot with stupid penalties, including one that cost them a touchdown at the end of the first half. The Trojans’ defense just couldn’t get off the field all night and the loss will cost them big in the polls.

Given how they had a full two weeks to prepare for this game after their big win over Ohio State, a loss like this is inexcusable, really. I know that sounds harsh, but I don’t mean it to be. It’s just rather staggering when a talented team like USC has an entire off week to rest and game plan for Oregon State and they lose. But this is college football and upsets are part of the game. And part of the fun.