Northern Iowa (3-1) made 12 3-pointers in beating Iowa State 99-82 at home last season, but went 6-for-26 from long range in this one. Any hope for a comeback ended when the Panthers missed four straight shots and committed two turnovers in the final 2 1/2 minutes.
Davis gave Iowa State a big lift by going 3-for-4 from 3-point range in topping his previous best of 13 points. He had been 2-for-10 on 3s coming in.
With Iowa State leading 56-53, Stinson backed in against John Little and hit a turnaround shot to start the Cyclones' decisive run. He then stole the ball at midcourt and fed Tasheed Carr for a layup that turned into a three-point play for a 61-53 lead.
After Coleman scored for Northern Iowa, Stinson hit a jumper in the lane and Davis nailed his third 3-pointer, making it 66-55 with 3:29 left. The Cyclones managed only two free throws the rest of the way, but protected the lead with their defense.
Stinson also led Iowa State with six rebounds and added three steals and three assists. Will Blalock had 10 assists, five rebounds and two steals for the Cyclones.
Coleman, quicker and stronger than Iowa State's inside players, gave the Cyclones trouble in the first half, scoring 12 points on 6-for-9 shooting. But Iowa State limited him to three baskets in the second half and he wasn't nearly as effective.
Stinson also was a key figure in Iowa State's first-half run, which erased a 20-14 Northern Iowa lead. He started it with a 3-pointer, found Davis with a bounce pass from the top of the key for a layup that put the Cyclones ahead 21-20 and finished it with a steal that led to Rahshon's Clark layup, which put Iowa State up 26-20.Story provided by Fox Sports