I'm sure that there are many from different people that are more recent and back longer. I'm going to go with two during the times I played.   The first was during my sophomore year in the '93 season when we beat Bellevue both times and the last time for the playoffs. It had been quite a while since we had beaten Bellevue at that time, much less beating them both times when they still played twice at that time. I believe that was the first time that Dayton made the playoffs since 1971.