Moose Jaw in Canada is the home of the Moose Jaw Meteorites, who are one of the most accomplished Quidditch teams in the modern world. They are famous for flying around with sparks flying from their brooms after a victory (QA8).
Although Moose Jaw is a relatively small town in southern Saskatchewan (south-central Canada), it is fairly well known due to its unusual name.
Although Moose Jaw has several sports teams listed on its Wikipedia page, no wizard sports are mentioned other than in the "Popular Culture" section (Wikipedia).
From the Web
Official website for the City of Moose Jaw