The Leathernecks led 47-37 early in the second half. Oral Roberts used an 18-7 run to take its first lead, 55-54 with 10 minutes remaining. Aaron Young scored five points and Emegano made a 3-pointer to stretch the Golden Eagles' lead to 63-59.
Garret Covington scored four points and J.C. Fuller made two free throws to pull Western Illinois to a 65-all tie with three minutes left. DaQuan Jeffries scored four points and Emegano made 8 of 8 free throws to seal it.
Emegano was 8 of 19 from the floor and made 13 of 16 free throws. Jeffries finished with six points and five steals for Oral Roberts (11-9, 3-3 Summit League).
Covington scored 22 points to lead Western Illinois (7-9, 0-5), which has lost seven straight.