Milwaukee (11-12, 4-6 Horizon League) had opened an eight-point lead early in the second half, but Garrett Covington led Youngstown State back twice, hitting a 3-pointer to tie at 42-42, and scoring a layup five minutes later to come within 48-46. Naz Bohannon scored to bring the Penguins back within 49-48 with 5:38 to go, which is as close as Youngstown State would get.
Bell sank a pair of free throws and then followed with a 3-pointer as Milwaukee went on a 14-0 run to lead 63-48 with a minute left.
Brock Stull scored nine points and added seven rebounds and seven assists for Milwaukee, which outscored Youngstown State 42-24 in the paint and led for most of the game.
Covington led Youngstown State (6-16, 4-5) with 15 points. Bohannon added 13 with four steals.
Wendell Moore, ranked No. 18 in the ESPN 100 and the No. 3 small forward in the country, has committed to Duke over North Carolina, NC State and Wake Forest.
Moore is the Blue Devils' first commitment in the 2019 class. The five-star prospect will provide versatility and leadership.
Iowa center Luka Garza came back to Iowa City this summer determined to move closer toward his goal of becoming one of the nation's top big men.