Each of the No. 1 seeds in the latest run of the CBS Sports Bracketology model will be in action against formidable conference opposition early this week, and at least one of them is guaranteed to lose. That's because of two of them will be playing each other on Tuesday night, when Michigan hosts Nebraska in a seismic Big Ten clash. Nebraska is holding on to the final No. 1 seed as it heads to Ann Arbor to put its undefeated record on the line against the Wolverines. The Cornhuskers are 10.5-point underdogs, which reflects an analytics profile that is lagging behind its resume. With the nation's No. 2 strength of record and as one of two unbeaten high-major teams left along with Arizona,...