Thompson was 8 of 13 from the field and had two blocks and a steal. Raven Lee made 9 of 10 free throws and finished with 17 points for Eastern Michigan (5-2).
The Eagles had a 15-point lead early in the second half. A 10-4 surge pulled the Mavericks to 64-55 with six minutes left. Thompson made a layup and the Eagles had a double-digit lead until Patterson, Tra-Deon Hollins and Randy Reed scored to make it 73-67 with 1:56 left.
Ty Toney scored and the Eagles made 5 of 6 free throws to seal it.