The fourth through sixth spots are still undetermined, and could be any of three or four teams. Toronto, should they qualify for the playoffs, will be 5th, which means the other three — McMaster, Ottawa, Windsor; all tied at 4-3 right now — have a home game on the line today.
There can't be a three-way tie with these teams, and the Marauders hold the tiebreakers over both, assuming nothing out of the ordinary happens. (They can sew up a point-differential tiebreaker over Windsor by beating Carleton by about 25 points, which should be simple enough to achieve.) So that home game is Mac's to lose.
Just in time for the games today, here are the odds for all four teams and each playoff position: