Vacherot broke for 4-2 and again for 6-2, clinical in sealing the set, with Van Assche unable to convert a single break point across two holds.
Van Assche broke for 1-0 and again for 5-2, but Vacherot broke back for 3-5 before Van Assche held for 6-4 in a 7 minute deuce game.
Van Assche broke for 2-1 to take it 6-4.