Wisconsin head coach Luke Fickell watches during the first half against Penn State on Oct. 26 in Madison, Wis. (AP Photo/Morry Gash, file)

Wisconsin’s improving defense faces its biggest test of the season thus far when the Badgers visit No 19 Alabama. Wisconsin is a 20 1/2-point underdog in the highest-profile game involving a Big Ten team this week. The Badgers are seeking to beat a Top 25 team for the first time in Luke Fickell’s three-year coaching tenure. Another interesting matchup involving a Big Ten school has Minnesota traveling to California in a matchup of unbeaten teams.

Things to watch this week in the Big Ten:

Game of the week

Wisconsin (2-0) at No. 19 Alabama (1-1), noon ET (ABC)

Wisconsin wanted to upgrade a defense that slipped into mediocrity last year. The Badgers h

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