Lemon came off the bench to do most of his damage at the free-throw line, making 15 of 16 attempts for the Braves (7-19, 2-12 Missouri Valley), who never trailed. He went 10 for 10 from the stripe in the last 3:59.
Dwayne Lathan scored 16 points and Jake Odum added 15 points and 11 rebounds for the Sycamores (14-11, 5-9), who shot just 33.3 percent (21 of 63) from the floor and tallied 17 points in the first half.
The Braves led by 16 in the second half, but Indiana State came back to get within 62-56 on Odum's layup with a minute left. But Lemon put the game away on a layup that made the score 67-58 with 22 seconds remaining.
R.J. Mahurin had 10 points for Indiana State.