Allan Cup Hockey (ACH), formerly Major League Hockey until 2011, is the top tier Canadian senior ice hockey league in the province of Ontario. Founded in 1990, as the Southwestern Senior "A" Hockey League, the ACH is a member of the Ontario Hockey Association and Hockey Canada. The ACH's champion contends for the Allan Cup each year. The league came to its latest incarnation when it lost several teams leaving it with two and as a result it merged with the Eastern Ontario Senior Hockey League in 2008.