Nigel Hayes scored 19 points .
Nigel Hayes made the winning layup with 11.4 seconds remaining as No. 8 seed Wisconsin upset defending champion Villanova 65 - 62 in an NCAA Tournament second - round game on Saturday .
Nigel Hayes scored 19 points and made the winning layup with 11.4 seconds remaining as No. 8 seed Wisconsin upset defending champion Villanova 65 - 62 in an NCAA Tournament second - round game on Saturday .