1. Devonte Fields, TCU: You could make a case for either of these two guys, and Fields wasn't as productive in conference play, but Fields' raw talent is eye-popping. I give him the No. 1 spot on this list after leading the league with 18.5 tackles for loss and 10 sacks.
2. Meshak Williams, Kansas State: Williams' motor runs higher than anyone else's in this league, and the juco transfer made a ton of the talent he was given to win the Big 12's Defensive Lineman of the Year Award. He was second in the league with 10.5 sacks and added 15.5 tackles for loss.
3. Alex Okafor, Texas: Okafor finished his career in unbelievable fashion, making 4.5 sacks and dominating Texas' Alamo Bowl win over Oregon State. That jolted him into the Big 12 title with 12.5 sacks and he was second in the league with 16.5 sacks. His career has been a bit up and down, but this was a fitting crescendo to a big talent.
4. Calvin Barnett, Oklahoma State: Barnett was the league's best interior defensive lineman this year, constantly getting a push and generally being a handful for offensive lines. He fixed his early-season penalty issues and finished with nine tackles for loss.
5. Jake McDonough, Iowa State: McDonough wasn't too far behind. He was a breakout star in the middle for Iowa State this season, pushing his way to two sacks and 5.5 tackles for loss. You can't grade interior linemen on numbers, but watch Iowa State's defense sometime. McDonough freed up a lot of space for the rest of the defense, one of the league's most underrated.
6. Adam Davis, Kansas State: Davis doesn't have the name recognition around the league that Williams did, but he was solid on the other side of the line, ranking fourth in the league with six sacks and eighth in the league with 11.5 sacks. K-State's defense was one of the Big 12's best last year. The D-line was a huge reason why.
7. Kerry Hyder, Texas Tech: Hyder was a breakout star this season for the much-improved Tech defense. He was fifth in the league with 14 tackles for loss and seventh with 5.5 sacks. The 6-foot-2, 281-pounder is versatile along the defensive line and could be due for a big 2013.
8. Jackson Jeffcoat, Texas: Jeffcoat's junior year came to a sad end when he injured his pectoral and underwent surgery, but even with the abbreviated season, he still had four sacks and 9.5 tackles for loss in just six games. Ridiculous. He could be a top 10 pick next April after electing to return to Texas for his senior season in 2013.
9. Stansly Maponga, TCU: Maponga was a little underwhelming this year, but still turned in a solid effort when you look from a wide angle and not from the high expectations he brought in as the Frogs' only preseason All-Big 12 selection and an All-Mountain West first-teamer. He battled injuries all year and finished with four sacks and 6.5 tackles for loss.
10. David King, Oklahoma: Maximus was mighty for the Sooners this season, who needed him to do a lot. Injuries and suspensions forced him to move all over the place on the defensive line. He was inside, outside and every other possible side. He finished with 2.5 sacks this season.
Honorable mention: Dartwan Bush, Texas Tech; Vai Lutui, Kansas State; Chris McAllister, Baylor; Chucky Hunter, TCU