Oklahoma Sooners

Turnover is an annual tradition in college football, but with that, teams' strengths and weaknesses constantly shift, too. Today, we'll continue our look at the biggest strengths and weaknesses for each Big 12 team.

Next up: Oklahoma.

Strongest position: Offensive line.

Don't discount Landry Jones' experience and decision-making, but Oklahoma threw the ball 571 times last year -- more than everyone in the Big 12 but Texas Tech -- and gave up just 15 sacks, third-fewest in the Big 12. The Sooners have good depth at running back but not a true gamebreaker, and the offense still averaged 4.85 yards a carry, third-most in the Big 12. Oklahoma dealt with a ton of injuries on the offensive line and at the end of the season, was basically reduced to five guys who could play and depended on true freshman Ty Darlington at times, too. The unit loses tackle Lane Johnson, but Gabe Ikard is the Big 12's best offensive lineman and returns alongside Adam Shead, Bronson Irwin and Tyrus Thompson. This unit perhaps could have been better than it was in 2011, which is part of the reason you saw position coach James Patton shown the door in favor of WVU's Bill Bedenbaugh, but it should be a big strength yet again in 2013. I'd say it's definitely the Sooners' best overall position. The Sooners fought through the loss of center Ben Habern and guard Tyler Evans in preseason camp last year, and Evans is out again after injuring his knee this spring. Here's betting Oklahoma fills the void yet again.

Weakest position: Defensive line

If you watched the Cotton Bowl, you know all you need to know about this position for the Sooners. Texas A&M had arguably the nation's best offensive line, but the Sooners D-line looked like a bunch of high schoolers for much of the game, applying zero pressure to Johnny Manziel and letting him get loose for a record-breaking game in a blowout loss. The Sooners lose four seniors along the line, leaving behind just Chuka Ndulue, Jordan Phillips and Mike Onuoha as contributors from last year's D-line that helped Oklahoma rank just 108th nationally in tackles for loss and 94th nationally in run defense. Oklahoma needs a big upgrade at this position to return to prominence, and I'm not sure the answer to the Sooners being as good along the front line of the defense is coming anywhere but on the recruiting trail.

More Weak and Strong.

The Oklahoma Sooners open spring practice this weekend with change in the air. Let's take a closer look.

Schedule: The Sooners begin spring ball Saturday, the first of 15 NCAA-allowed practices. OU will hold its spring game April 13.

What's new: What’s not? Bob Stoops brought in three new assistants, seven defensive starters are gone, and for the first time in six years, the Sooners have a quarterback competition. After back-to-back three-loss seasons, this is lining up to be the most important -- and most intriguing -- spring of the Stoops era in Norman.

All eyes on: The quarterback derby, which will be the dominant storyline of the spring. Junior Blake Bell, sophomore Kendal Thompson and freshman Trevor Knight are all vying to replace four-year starter Landry Jones. Bell is the favorite because of his age and experience in the “Belldozer” package, but insiders around the program believe Knight is capable of unseating him. Whatever happens in the spring, don’t expect a starter to be named. Stoops waited until the fall to declare Sam Bradford his starter in 2007, and figures to do the same here.

New faces: The Sooners welcome four mid-semester enrollees, and all four have a chance to make immediate impacts. Toronto native Josiah St. John, the No. 1 junior-college offensive tackle in the country, figures to be no worse than a key backup. Wide receiver Dannon Cavil, who grew up a Texas fan, has great size and should vie for a rotation spot at outside receiver. Defensively, Ahmad Thomas will be given every opportunity to start at safety, and defensive end D.J. Ward, the top player coming out of the state of Oklahoma, could boost a defensive front that ranked 108th nationally in tackles for loss last season.

Question marks: With only 11 starters back, the Sooners have plenty. On top of the quarterback battle, OU must overhaul virtually the entire defense, with All-Big 12 cornerback Aaron Colvin the only returning impact defender. Defensive tackle and back safety are especially tenuous. The Sooners have only three defensive tackles on the roster to practice with at the moment, and no one other than Colvin has a down of experience at back safety. Mike Stoops will have to be creative just to get through the spring, until reinforcements arrive over the summer.

Don’t forget about: Wide receiver Trey Metoyer, who was the star of last spring as a true freshman. Metoyer, however, failed to carry that momentum into the fall, lost his starting job and eventually fell out of the rotation. A new year and new quarterback should re-energize Metoyer, who has all the tools to become a dominant outside receiver.

On the mend: Guards Tyler Evans and Nila Kasitati, who are both coming off season-ending knee injuries. Both, however, are hoping to be at least limited participants in the spring, which would spur them into summer workouts.

After recruiting them for several months, Oklahoma's coaching staff was finally able to talk publicly about the players the Sooners added to the program on signing day. Over the next week or so, SoonerNation will review some of the key things coaches had to say about the players signed at each position group during their signing day webcast on Soonersports.com.

Oklahoma is looking to get tougher, more physical along its offensive front. Guard Dionte Savage (Flint, Mich./Arizona Western) should help the Sooners reach that goal. At 6-foot-5, 340 pounds, Savage brings unique size to OU's interior line.

"This guy has size on top of size," co-offensive coordinator Jay Norvell said. "What a physical presence he brings. When you say full-grown man when he walks in a room, this kid is a full-grown man. We had a lot of injuries last year and it was tough at the end getting healthy bodies out there. This guy is a big strong guy who can help us with our running game and depth."

After ending the 2012 season with very limited bodies at guard, Savage joins returning starters Adam Shead and Bronson Irwin along with Tyler Evans and Nila Kasitati, who are returning from injuries. Savage brings a better body than any of the Sooners returnees.

"He is a specimen," running backs coach Cale Gundy said. "He’s someone we expect can come in and give us some help, possibly be one of our starting guards.”

The Sooners were impressed by Savage's dedication, as the former 400-pounder lost more than 60 pounds to get into better shape for his second season at Arizona Western.

"Dionte Savage is a big, strong, physical guy," head coach Bob Stoops said. "A huge weightlifter and a powerful, strong guy. He’s got great ability to move and great strength, so I believe he is going to help us be more physical in there. Just really powerful, an excellent young man. Loved having him on campus, he loves to work. He’s going to help us be more physical."