Grosse Isle was part of an Interlake League which over the years included teams from Lundar, St. Laurent. Warren, Stonewall, Teulon, Balmoral, North Winnipeg, Springfield, and Vita. In three of the six years between 1988 and 1993 the Grosse Isle Blue Jays were champions of the League, and in two other years, they were finalists. The team won the Manitoba Senior AA championship in 1988 and represented Manitoba at Western Canadians in Kamloops. In 1994 they won the AA Senior title again. They were always tough to beat, especially at their home Atree Field. The team featured a strong pitching staff. It was managed by Art Essery and coached by Dan Cassils.