It was the first win of the season for Idaho (1-2).
Connor Hill scored 12 points for Idaho.
Green Bay's Kam Cerroni scored 9 points, all on 3-pointers.
Idaho had a 19-9 scoring advantage off the bench and scored 11 fast-break points while keeping Green Bay off the board in that category.
Purdue coach Matt Painter says players haven't used the fifth-year graduate transfer rule for its true intent.
The dust has settled after players made their NBA draft decisions. Which college teams won? Which lost? Well, Villanova is pretty happy. USC, meanwhile, might not be as thrilled.
The 2017 recruiting class is short on point guards, with Trevon Duval leading only eight prospects from the ESPN 60 who are still available.