Who is the Big 12's second-best team?

Few, if any, would disagree that Oklahoma opens 2011 as the class of the Big 12.

But who is No. 2?

It's an increasingly intriguing debate.

You'll see Oklahoma State and Texas A&M flipped in polls from time to time, and there's plenty to like about both teams. You could make the case either way.

Oklahoma State won 11 games a year ago, and returns its entire offensive line, as well as the All-Big 12 first-team quarterback and Biletnikoff Award winner at receiver. It has to replace 1,500-yard rusher Kendall Hunter, but has a solid stable of backs that look ready to do so.

However, it must replace six starters on defense, including its leader, linebacker Orie Lemon.

Texas A&M, meanwhile, won just nine games last season, but shared the Big 12 South with Oklahoma State and Oklahoma after finishing 6-1 following a 3-3 start.

It brings back the Big 12's most experienced team, including an offense without any real question marks or weaknesses. The team must replace its top two tacklers on defense, and preseason hype hasn't treated the Aggies well, but there's no reason to believe they shouldn't be very stout this fall.

So, I'm interested in what the collective Big 12 fanbases think.

Who is the top challenger to Oklahoma, and the Big 12's second-best team. We'll find out on the field on Sept. 24, but for now, we'll have to settle for a poll.