Kopp, Northwestern hang on to beat Nebraska 62-57

Nebraska head coach Fred Hoiberg reacts to a call during the first half of an NCAA college basketball game against Northwestern in Evanston, Ill., Saturday, Jan. 11, 2020. (AP Photo/Nam Y. Huh)

Nebraska guard Dachon Burke Jr., right, drives against Northwestern forward A.J. Turner during the first half of an NCAA college basketball game in Evanston, Ill., Saturday, Jan. 11, 2020. (AP Photo/Nam Y. Huh)

Nebraska forward Kevin Cross, right, drives against Northwestern center Ryan Young during the first half of an NCAA college basketball game in Evanston, Ill., Saturday, Jan. 11, 2020. (AP Photo/Nam Y. Huh)

Nebraska forward Yvan Ouedraogo, center, goes to the basket as Northwestern forward Pete Nance, left, and center Ryan Young guard against him during the first half of an NCAA college basketball game in Evanston, Ill., Saturday, Jan. 11, 2020. (AP Photo/Nam Y. Huh)

Nebraska guard Haanif Cheatham, center, drives to the basket against Northwestern forward Pete Nance, left, forward Robbie Beran during the first half of an NCAA college basketball game in Evanston, Ill., Saturday, Jan. 11, 2020. (AP Photo/Nam Y. Huh)

Nebraska guard Dachon Burke Jr., top, and Northwestern forward A.J. Turner battle for the ball during the first half of an NCAA college basketball game in Evanston, Ill., Saturday, Jan. 11, 2020. (AP Photo/Nam Y. Huh)

Nebraska guard Haanif Cheatham, right, shoots against Northwestern forward Pete Nance during the first half of an NCAA college basketball game in Evanston, Ill., Saturday, Jan. 11, 2020. (AP Photo/Nam Y. Huh)

Northwestern head coach Chris Collins calls his team during the first half of an NCAA college basketball game against Nebraska in Evanston, Ill., Saturday, Jan. 11, 2020. (AP Photo/Nam Y. Huh)