6 the Number of divisions (aka, every single one of them!) in which a first-place team has blown a lead of at least 5 1/2 games. According to Elias, this has never happened before in the six-division era, which dates back to 1994.
The Yankees were as many as eight games up in the AL East before the Blue Jays caught them.
The Mets were 5 1/2 games up in the NL East before the Phillies caught them.
The Cubs were 6 1/2 games up in the NL Central before the Brewers caught them.
The Astros were seven up in the AL West before the Mariners caught them.
The Dodgers were nine up in the NL West before the Padres caught them (though the Dodgers have since recovered).
And most astonishing of all, the Tigers were a season-high 15 1/2 up in the AL Central at one point, but they finally got caught by the Guardians on Tuesday night.
mlb.com