The Mastodons (15-5, 3-0 Summit) trailed 40-31 after surrendering an 11-0 run in the second half. Evans responded, converting a three-point play and hitting two 3-pointers to spark a 16-2 surge and push IPFW towards a 60-53 lead with 1:50 remaining.
Denver (7-10, 0-2) rallied as Brett Olson converted a three-point play and Bryant Rucker sank a 3-pointer to pull within one with 15 seconds left. Following two free throws by Pierre Bland, Olson couldn't connect on a 3-pointer in the final seconds.
The Pioneers had a 51.1 shooting percentage to IPFW's 45.2, but the Mastodons hit 22 of 31 from the foul line. Bland had 13 points for IPFW.
Cam Griffin paced Denver with 13 points, six boards and five assists.
Mississippi State freshman guard Malik Newman will withdraw from the NBA draft, but sources told ESPN he might explore other opportunities besides returning to Mississippi State.
Seton Hall sophomore Isaiah Whitehead will stay in the NBA draft and not return for his junior season.
Washington State's trio of Josh Hawkinson, Conor Clifford and Ike Iroegbu have withdrawn from the NBA draft and will play their senior season with the Cougars.