Larson had all 12 of his points in the first half to help South Dakota State (14-7, 5-2 Summit League) build a 42-18 lead at the break. The Jackrabbits led by no less than 20 points in the second half.
IPFW (8-11, 1-5) had eight turnovers during a scoreless stretch of nearly seven minutes while South Dakota State scored 19 straight to go ahead 36-12. Steve Forbes' free throws broke the drought at 5:07 and Max Landis had the first field goal for the Mastodons in over 10 minutes with 1:22 left in the half.
Mo Evans and Forbes led the Mastodons with nine points each.