They rotate a 3 and 3 in the Big 12, so for two years they played Kansas, KSU, and Nebraska. Then the next set of 2 years they would play Missouri, Colorado, and Iowa State.
By the way, Colorado went to 5 bowls during Leach's 10 years at Texas Tech, including 2 of the 4 times Leach's teams played them. They are a historically solid football program. They're just bad now.
Given that we're 2-5 in our last 7 against Vanderbilt, I would gladly welcome a coach that beats teams like Baylor regularly. For programs like ours, that's a good thing. Mullen is looking to make a career at MSU out of beating the teams he's "supposed" to beat.