There are two huge inter-division games in the Big 12 this weekend, with BCS No. 1 Oklahoma at Missouri and unbeaten Oklahoma State hosting Nebraska. Desmond Howard and Kirk Herbstreit of ESPN's College GameDay, on site at Columbia, Mo., look at the keys to both games.
Jake Trotter joined ESPN.com in 2011 after four years with The Oklahoman covering OU football. Before that, he worked at the Austin American-Statesman and Middletown (Ohio) Journal. He's a graduate of Washington and Lee (Va.) University and lives in Oklahoma City with his wife.
Brandon Chatmon joined ESPN.com in August 2011 after seven years at the Oklahoman covering Oklahoma State University, high schools and recruiting. An avid college football, NFL and NBA fan, Chatmon resides in Norman, Okla.