Don't get swept. As long as the Jays win 1 of the 3, they should be reasonably fine as they'd still have a 2 game lead (3 counting the tiebreaker), but I think 2/3 puts the Jays in the driver's seat. The Yankees schedule is super easy after this HOU/TOR/DET/BOS stretch, while the Jays don't have an easy opponent left other than the O's who have clobbered Jays pitching all year, so the more distance between the two teams by Monday morning would obviously be the best scenario. If the Jays get swept, then it's likely a WC spot in their future.
Goes without saying, big f'n series.