Landis, who entered the game averaging 15.7 points per game, is now averaging 21.8 in his last four contests.
IPFW (11-4) managed to overcome a career high by Obi Emegano who finished with 38 points for Oral Roberts (8-7). Emegano shot 15 for 24 from the field and 4 for 5 from the free-throw line.
Emegano's jumper with 7:59 left tied the game at 69. But John Konchar's 3-point play 50 seconds later put IPFW on top for good.
Down 86-79 after two Konchar free throws, DaQuan Jeffries hit a layup then collected a steal leading to a another layup to make it 86-83 with 55 seconds left to play.
Mo Evans then shot 4 for 4 from the free-throw line to protect the win.