TORONTO — In June, a Toronto Blue Jays game like Tuesday’s wouldn’t have mattered that much. The 18,000 Cleveland Guardians fans might’ve been fairly sleepy as the teams traded zeroes in the opening innings. September changes it all. The stakes, as Gavin Williams kept striking out Jays and as Cleveland hitters pelted late homers, were clear.For a few weeks, it wasn’t entirely clear if Toronto’s September games would even matter. Now, the Jays have entered the most important series and most important month of their season. They’ve got 23 games to stay hot and find October.“This is what you play for,” Max Scherzer said. “This is what’s fun. When you’re in the thick of it, you’re in the hunt. You got to win. The pressure is on. You’ve got to go out there and do something about it.”With a 6-1 loss to the Guardians on Tuesday, the Jays now face a 23-game sprint to the postseason. They are 2 1/2 games back of the final American League playoff spot and their postseason odds, per FanGraphs, sit just below 17 percent. They can’t afford many missteps in September, with tiebreakers up for grabs and a wild-card berth within reach for basically half the league.Here’s everything you need to know with baseball’s calendar in the final month of the regular season:Blue Jays tiebreaker scenariosWith how tight the wild-card race is, a tiebreaker could come into play. There is no Game 163 anymore, so regular-season tiebreakers determine postseason seeding for any organizations that finish deadlocked in the standings. Cleveland sits ahead of Toronto for the final wild-card position, which makes the next two games against the Guardians important.