NCF Nation: Richard Johnson
Here's what each team across the Big 12 needs. You'll find Texas A&M and Mizzou on the SEC blog and West Virginia on the Big East Blog.
Quarterback: This one's pretty simple. Robert Griffin III is taking his talents to the NFL early. Nick Florence is waiting to take over, and the Bears have Bryce Petty behind him, but more reinforcements at quarterback are needed. Dual-threat quarterbacks, ideally.
Defensive tackle: Baylor already was one of the nation's worst teams (102nd nationally) at stopping the run. Now it'll need to replace both its interior linemen, Nicolas Jean-Baptiste and Tracy Robertson.
Offensive linemen: Baylor's offensive line, meanwhile, has been solid. It loses junior college transfer and two-year starter Robert T. Griffin, as well as All-Big 12 center Philip Blake. John Jones, a reserve guard, also has exhausted his eligibility.
Receiver: This has been a weak spot for the team for several years, and its top overall talent, Darius Reynolds, is gone. Darius Darks is, too. Aaron Horne and Josh Lenz will be the team's best weapons in 2012, but the pair of shifty slot guys will be seniors. This position needs reinforcements.
Defensive back: The DBs have been a quiet strength for ISU, especially in 2011. Cornerback Leonard Johnson and safety Ter'Ran Benton both have exhausted their eligibility, though, and defensive backs coach Bobby Elliott left for Notre Dame. You'll see plenty of new faces in the Cyclones' secondary next year.
Defensive line: Experienced starters Stephen Ruempolhamer and Jacob Lattimer are both gone, and Iowa State has struggled to stop the run consistently the past few seasons.
Quarterback: Kansas landed high-profile transfers Dayne Crist (Notre Dame) and Jake Heaps (BYU), but this is still a huge position of need. Last year's starter, Jordan Webb, left the team. Quinn Mecham is out of eligibility. Heaps is sitting out his NCAA-mandated year after transferring. Crist is the starter, but he badly needs a backup, especially if Brock Berglund's transfer appeal allows him to leave.
Wide receiver: Kansas lacks a big threat at this position. It needs a talent upgrade in a big way. Oklahoma transfer Justin McCay is joining the team, but he's no guarantee to a) be granted immediate eligibility or b) become an impact player.
Defensive tackle: Kansas is thin here, too. Richard Johnson, Patrick Dorsey and Michael Martinovich are gone, and Kansas couldn't stop much of anything on defense. Some push up front could help make everything look better. A late addition to the 2012 class from a junior college seems like a no-brainer. The Jayhawks need physically mature players to contribute immediately.
Offensive line: K-State's offensive line was much better in 2011 and could be again in 2012. It needs help replacing All-Big 12 lineman Clyde Aufner, though. Starter Colten Freeze is also gone.
Defensive line: Kansas State is bringing back about as many starters as anyone in the Big 12, but the biggest losses are along the defensive line. Kick-blocking specialist (five in 2011) Ralph Guidry is gone, along with tackle Ray Kibble. Juco transfer Jordan Voelker exploded onto the scene this year, but he's gone, too.
Defensive backs: Cornerback David Garrett leaves a huge hole behind. Tysyn Hartman may not be as talented as teammate Ty Zimmerman, but his experience leaves a big hole. Zimmerman will have to mentor a younger safety in the near future.
Receiver: The Sooners are thin here in a big way. That was obvious late in the season when Ryan Broyles' storied college career ended a few weeks early with a knee injury. The team also lost Justin McCay (transfer) to Kansas. Jaz Reynolds and Kenny Stills are the likely top two targets, but they need help.
Tight end: This position inspired a bit of panic at the end of the season. Seniors James Hanna and Trent Ratterree are gone. Austin Haywood wasn't allowed back on the team, and two more tight ends left the team for various reasons. That left the Sooners suddenly without a scholarship player at the position returning in 2012.
Offensive line: Starting tackle Donald Stephenson must be replaced, as will guard Stephen Good, who moved in and out of the starting lineup throughout his career. The Sooners bring back a lot of talent and aren't dying for depth there, but those two will leave holes. Three more offensive line starters will be seniors in 2012.
Offensive line: The Cowboys need a whole lot of help here to fill in behind young players stepping into the starting lineup. Starters Levy Adcock, Nick Martinez and Grant Garner are gone. Backup center Casey LaBrue is gone, too. Those are two All-Big 12 linemen who leave big shoes to be filled.
Receiver: Justin Blackmon surprised no one by leaving a year early, and Josh Cooper leaves with perhaps the most underrated career of any receiver in school history. In OSU's offense, there's always room for depth here. Nine receivers had at least 19 catches in 2011. Blackmon and Cooper combined for 192, though.
Defensive ends: The pass rush was solid for Oklahoma State this year, but both starters, Jamie Blatnick and Richetti Jones, are gone. Replacing both is a necessity.
Receiver: Texas lacks a true game-changer at the position, though Jaxon Shipley and Mike Davis may develop into that role in 2012. Former blue-chip recruit Darius White left for Missouri, too.
Quarterback: David Ash and Case McCoy didn't show a ton of potential at quarterback this year, though Ash may grow with an offseason to prepare as starter. Garrett Gilbert got a big chunk of the work in the spring, summer 7-on-7 and fall preseason camp. Even if Ash does grow, the Longhorns need reinforcements at the position.
Linebacker: Two senior impact players are gone. Texas is left trying to replace Emmanuel Acho and Keenan Robinson, though Jordan Hicks may mature into a star in 2012.
Offensive line: TCU's offensive line is headed for some major turnover. OT Robert Deck, OG Kyle Dooley and OG Spencer Thompson are gone. Two more starters, OG Blaize Foltz and C James Fry, will be seniors in 2012.
Defensive linemen: TCU isn't losing a lot at this spot, but Ross Forrest and D.J. Yendrey will be seniors in 2012. The Horned Frogs would be well-served to prepare, and offer some depth next year.
Specialists: TCU will have to break in a pair of new starters on special teams next season. Kicker Ross Evans and punter Anson Kelton have exhausted their eligibility.
Receiver: The Red Raiders' offense requires a lot of depth here. Tramain Swindall is the only loss at the position, but three more (Alex Torres, Cornelius Douglas, Darrin Moore) will be seniors. Douglas moved to cornerback this year after the team was racked with injury, but we'll see whether he moves back this offseason.
Offensive line: Tech has a huge need here. Four players won't be returning in 2012. Lonnie Edwards, Mickey Okafor and center Justin Keown must be replaced.
Defensive linemen: Tech's Donald Langley and Scott Smith are both out of eligibility, and juco transfer Leon Mackey will be a senior.
Posted by ESPN.com's Tim Griffin
Sometimes the spring provides a chance for personnel holes to be filled. Sometimes it doesn't.
Here are some of the notable positions around the Big 12 that picked up some assistance during the spring.
Baylor: The quick development of defensive tackle Phil Taylor, a heralded transfer from Penn State, should turn a traditional position of weakness for the Bears into a strength. Joining him at the position will be Jason Lamb, who showed some promise after moving over from defensive end before spring practice.
Colorado: The emergence of hulking 260-pound middle linebacker Marcus Burton and B.J. Beatty at outside linebacker have helped transform the Buffaloes' defense. Burton led the team in tackles and was a prime playmaker in the spring game with eight tackles, two sacks and a fumble recovery. He had eight tackles in 10 games last season.
Iowa State: Redshirt freshman quarterback Jerome Tiller outplayed starter Austen Arnaud in the spring game, passing for 210 yards and getting free for a 65-yard touchdown run. I'm not sure that Tiller will be starting come September, but he'll make Arnaud work harder to earn his job.
Kansas: The Jayhawks had questions in the defensive line before the spring, even with the return of all-Big 12 honorable mention selections Caleb Blakesley and Jake Laptad and late season starting defensive tackles Richard Johnson and Jamal Greene. The development of tackle Darius Parish and end Max Onyegbule should add to the depth. And that doesn't even account for the arrival of heralded junior college transfer Quintin Woods, who originally signed with Michigan out of high school before heading to Bakersfield (Cal.) Community College to get his grades in order.
Kansas State: The emergence of linebackers like Alex Hrebec, Ulla Pomele and John Houlik has helped turn the position into the strength of the defense, even as the Wildcats are transforming to a 4-2-5 alignment. Hrebec, a former walk-on, contributed 19 tackles in the spring game and Houlik is a huge hitter despite his 5-foot-11, 219-pound size.
Missouri: Redshirt freshman Aldon Smith has only added to the Tigers' depth at defensive end, which already featured Brian Coulter and Jacquies Smith in front of him. Smith was voted as the team's most improved player in the spring. Throw in converted offensive tackle Brad Madison and redshirt freshman Marcus Marlbrough and you'll see why Gary Pinkel considers it his best collection of defensive ends at Missouri.
Nebraska: The Cornhuskers had serious questions at quarterback, particularly after the departure of projected starting challenger Patrick Witt before spring practice and Kody Spano's knee injury. But the strong spring by Zac Lee and the surprising development of converted linebacker LaTravis Washington eased some of offensive coordinator Shawn Watson's concerns. Their strong spring work also should mean that heralded freshman Cody Green likely won't be thrown into action perhaps as quickly as Watson might have feared before the spring.
Oklahoma: After losing starters Nic Harris and Lendy Holmes, safety was the only position without returning starters for the Sooners on defense. Quinton Carter nailed down one starting position and Sam Proctor and Joseph Ibiloye are poised to fight for the other job beside him. Emmanuel Jones and Desmond Jackson also had strong spring efforts to challenge for playing time.
Oklahoma State: Defensive tackle was enough of a question that new coordinator Bill Young moved Derek Burton inside from defensive end to help bolster depth at the position. Burton and Swanson Miller appear to have won starting jobs with redshirt freshman Nigel Nicholas and junior Chris Donaldson providing strong depth. Their strong play helped the Cowboys rack up seven sacks in the spring game - more than half of their 2008 season total of 13.
Texas: The Longhorns were concerned about defensive end after the departure of NFL draft picks Brian Orakpo and Henry Melton from last season. Those fears appear to be assuaged after the seamless transition of Sergio Kindle to the position from linebacker and the quick assimilation by freshman Alex Okafor. Toss in Sam Acho and Russell Carter and the return injured pass-rushing threat Eddie Jones and the Longhorns appear stacked at the position.
Texas A&M: Safety was a question mark before spring camp after the loss of Devin Gregg and Alton Dixon and the move of 2008 starting free safety Jordan Peterson to cornerback. But the strong return to safety by converted cornerback Jordan Pugh and the noticeable development by Trent Hunter helped solidify the position during the spring. And the Aggies' depth at the position was improved after the move of wide receiver Chris Caflisch to the position along with strong play from DeMaurier Thompson.
Texas Tech: The departure of two-time Biletnikoff Award winner Michael Crabtree and underrated Eric Morris was supposed to cripple the Red Raiders' receiving corps. Mike Leach appears to have found several serviceable replacements after Tramain Swindall, Lyle Leong, Detron Lewis and walk-on flanker Adam Torres all emerged during the spring. And that doesn't include Edward Britton, who was in Leach's doghouse much of the spring after falling behind in the classroom but still is perhaps their most athletic force on the field.
Posted by ESPN.com's Tim Griffin
LAWRENCE, Kan. -- Welcome to Memorial Stadium, where defensive stops will be as rare today as anywhere in the Big 12 this season.
The two teams have combined for 311 total yards, 15 first downs and 236 yards passing so far.
The difference in the game is Tech's opening "rise" as defensive coordinator Ruffin McNeill likes to call them. That three-and-out was the only time that either offense failed to score on its possession and the only punt that has been forced so far.
And with Tech set to receive the ball to start the second half, it gives them the biggest advantage so far.
Kansas has attacked the Tech offense by trying to boost athleticism by switching wide receiver Daymond Patterson to cornerback. But it hasn't helped much yet.
Kansas' pass rush has been slowed after freshman defensive tackle Richard Johnson went down with an injury to his left knee. Johnson hobbled off the field and hasn't been back yet. His injury is critical because he's replacing starter Caleb Blakesley at the position.
Tech walk-on kicker Matt Williams has shown no jitters, converting both extra points with plenty of room to spare.