LOUISVILLE, Ky. (AP) -- Jordan Nwora had 22 points and 12 rebounds, and top-ranked Louisville held No. 4 Michigan to a season-low 26% shooting mark for a 58-43 victory in its first game since returning to No. 1. The Cardinals shot just 37% but their defense stifled Michigan much of the night as they earned a signature victory in the Big Ten/ACC Challenge one day after claiming the top spot in the AP Top 25 for the first time in six years.