An unheralded redshirt freshman at the start of last season, McCoy nearly put himself in Heisman Trophy contention through the first two months of the 2006 campaign before a neck injury threw him off course. He tied an NCAA freshman-record with 29 touchdown passes while completing 68.2 percent of his attempts last year. He could be even better in his second season as a starter.
If not for McCoy (or teammate Jorvorskie Lane), Goodson would have taken home more Big 12 freshman accolades. The explosive back led the Aggies in rushing, running for 847 yards and four touchdowns despite splitting carries with Lane.
Despite being hampered by injuries in his first two seasons, Peterson entered Oklahoma State's top 10 in sacks with 14.5 in his career. In Peterson's first healthy year in Stillwater, he had eight sacks.
After two years of splitting carries, Charles will be the featured back at Texas. He's one of the fastest backs in the Big 12, but has yet to have a breakout year. After leading the team with 831 yards and seven touchdowns, he'll have to carry the Texas running game this year without a safety net.
Lokey returns after missing the final five games of last season with a broken leg. While Lokey was healthy, the Longhorns allowed only 45.4 rushing yards per game. The run-stuffer finished the season with four tackles for a loss in eight games.
The North Carolina transfer made the most of his first year in Stillwater with 1,181 receiving yards and 12 touchdowns. He turned in the best day for a wide receiver last year with 300 yards and four touchdowns against Kansas.
Entering his third year as a starter, Okam spurned the NFL to return for his final season. Along with Lokey and Roy Miller, Okam led a defensive tackle group that helped Texas rank third in the country in run defense.
Despite uncertainty at quarterback at the start of fall camp last year, Kelly finished the season with 993 receiving yards and 10 touchdowns. The 6-foot-4, 217-pound receiver will be counted on to produce similar results in 2007.
Rucker teams with Chase Coffman for the most dangerous tight end duo in the country. A little faster and a little more polished at the position than his counterpart, Rucker caught 53 passes for 511 yards and five touchdowns in 2007 to make him the most prolific pass-catching tight end in school history.
After starting the last two seasons at weakside linebacker, Ruud moves to the strongside for the 2007 campaign. Following his brother Barrett and father Tom to Nebraska, Ruud enters his senior season with 162 career tackles and 21 tackles for a loss.
Texas lost three all-conference performers on its line after 2006, meaning the Longhorns will rely more on second-year starter Hills. There's no reason to think the 6-foot-6, 305-pound Hills won't be up to the task after taking over the starting left tackle job last year.
Collins' promising 2006 season was derailed by a knee injury in the sixth game of the year. He was the Cowboys' leading tackler with 31 at the time of the injury, earning Rivals.com second-team freshman All-American honors.
Babalola might have been a first-team all-conference lineman last season, but injuries limited him throughout the year. The junior was a Rivals.com freshman All-American, but the Aggies are counting on him to be healthy now that he is a veteran.
Smith split time between cornerback and safety last year and will likely start 2007 at cornerback. The quick Smith continued the strong Oklahoma defensive back tradition with three interceptions and eight pass breakups last year.
Oklahoma's offensive line blossomed as the year went on in 2006, and Robinson was part of that resurgence. The powerful guard helped the Sooners' run game continue to put up big numbers even with Adrian Peterson sidelined for seven games.
A true shutdown corner, Talib's performance last year was lost on a team that ranked last in the country in pass defense. Even with opposing defenses avoiding this Thorpe Award candidate, Talib defended 2.8 passes per game to go with a Big 12-leading six interceptions.
A second-team All-Big 12 performer last year, Wallace is a Rimington Trophy candidate at center. The A&M rushing attack, which ranked eighth in the country last year, begins with the Aggies' third-year starter Wallace
A Rivals.com first-team freshman All-American, Cox averaged 12.8 yards per return to rank in the national top 15. The true freshman averaged 23.8 yard per kickoff return. He also had two interceptions as defensive back.
Wheatley made a strong return after missing all of 2005 following wrist surgery. In 2006, Wheatley was a second-team All-Big 12 performer in 2007 when he finished with five interceptions and 11 pass break ups. He's also excellent on the Buffs' kick coverage teams.
Daniel's play last season reassured Missouri fans that they wouldn't miss star quarterback Brad Smith too much. In his first season as a starter, Daniel was fifth in the nation in total offense with 3,527 passing yards and 379 rushing yards on a resurgent Tigers team.
Orakpo has started only two games over his three seasons at Texas, but he's been sitting behind Tim Crowder and Brian Robison over the last two years. He still managed to pick up 4.5 sacks, but more will be expected in his first season as a starter.
After an early season injury, Savage heated up over the second half of the season. He topped the 100-yard rushing mark in five of the last seven games. An underrated runner, he finished last year with 6.5 yards per carry and eight touchdowns.
In the shadow of Ian Campbell at Kansas State, Jackson has still managed to put up impressive numbers. He could even surpass Campbell as a pass rusher after having 4.5 sacks last year following his transfer from junior college.
Adrian Peterson clearly wasn't the only star running back on the OU roster last year. In Patrick's first four starts following Peterson's injury, the junior ran for 603 yards and three touchdowns. This year, he'll share carries with DeMarco Murray and Chris Brown.
At 6 feet 5 and 219 pounds, Sweed is a matchup nightmare for opposing cornerbacks. If he can capitalize on his combination of size and speed, he could be an All-American. He faded over the final five games last season, finishing with 801 receiving yards and 12 touchdowns.
McCoy was USA Today's High School National Defensive Player of the Year and the No. 4 overall prospect in the country in 2006. He could be Oklahoma's best defensive lineman despite redshirting last year as a true freshman.
Missouri's top targets in the passing game are the star tight ends, but Franklin gives the Tigers a good downfield option. Even with Martin Rucker and Chase Coffman catching passes, Franklin finished with 829 receiving yards and averaged 17.3 yards per catch.
A tackling machine, Bowen led the country with nearly 13 tackles per game in 2006. He finished four games last year with at least 15 stops. His career high for tackles in a game entering the 2006 season was six.
A second-team All-Big 12 selection at the end of last season, Dizon was a bright spot in a 2-10 year for the Buffaloes. Dizon was third in the conference after averaging more than 10 tackles per game. He also recorded 11 total tackles for a loss.
Koenig's spot on the line is up in the air a bit - he could play either tackle or guard. As a starter at left guard, he helped the Cowboys become one of two teams to pass for 200 yards per game and rush for 200 yards per game in 2006.
Muckelroy is listed as a backup at outside linebacker but it's a good bet he will start before the end of the season. Before a season-ending finger injury last year, he had 10 tackles and three tackles for a loss in the first three games.
Injuries have derailed a promising career for Bowman, who could be a Thorpe Award candidate if healthy. After missing the 2006 season with a torn ACL, Bowman will rejoin the Huskers this season following an injury to his other knee. In his last full season in 2005, Bowman had 14 pass break-ups.
As the only returning starter on Texas Tech's offensive line, Vasquez will be relied upon to jump-start Tech's potent offense. Vasquez helped running back Shannon Woods gain 926 rushing yards and 572 receiving yards in Tech's high-powered offense.
Another key component of the Aggies' option-based offense, Elder helped A&M accumulate nearly 400 yards of offense per game. He's also one of the Aggies' most veteran players. Elder has started 35 consecutive games.
Harris is the Sooners' leading returning tackler with 68. He also led the team in interceptions with four. He spent most of the season last year playing in Oklahoma's nickel package before starting the last three games at free safety.
Missouri's offense, which ranked eighth in the country last year in yards per game, starts with Spieker at center. He's also Missouri's most veteran player with 36 consecutive starts, 12 short of the school record.
Gregg is Texas A&M's returning leading tackler with 64. He also added two interceptions a year ago (both against Army). In Gregg's first year as a starter, the Aggies allowed 114 fewer passing yards per game than they did the previous year.
Once a diver on the Tigers' swimming and diving team, Wolfert kicked in only one game in his high school career before taking over place-kicking duties at Missouri. He was 18 of 20 on field goals last year and enters the season converting 53 consecutive kicks ? 38 extra points and 15 field goals.
Brantly's 44.3-yard average last year was 10th in the nation and the third-best single-season average for an Aggies punter. His career average of 43.8 yards per punt is second in school history behind Shane Lechler.
Running backs at Texas Tech are asked to be true dual threats as runners and pass-catchers. Woods excelled in both departments, leading all running backs in the country with 75 receptions and 572 receiving yards. He also had 926 rushing yards.