In 1987, Alavi, Boals, Chartrand, Erdös, and Oellermann conjectured that all graphs have an ascending subgraph decomposition (ASD). In previous papers, we showed that all tournaments of order congruent to 1, 2, or 3 mod 6 have an ASD. In this paper, we will consider the case where the tournament has order congruent to 5 mod 6.