 Eastern joined the NCAA in 1978 in Division II, moved up to Division I-AA in 1984, and joined the Big Sky in 1987.The only one tie was in 1984, when it was a non-conference contest; the Big Sky introduced overtime for conference games in 1980.Montana broke Eastern's four-game winning streak in 2015 with a lopsided 57–16 victory in Missoula.