It’s May 19th, and the Phillies are in first second place in the National League East. Yes, the Phillies. The team that generated a 1,000 “tanking is ruining the sport” articles this winter has, six weeks into the season, the third-best record in the National League. As Jeff Sullivan noted this morning, their remarkably excellent bullpen has been one of the primary drivers of the early success, with David Hernandez and Hector Neris surprisingly emerging as dominant forces in the middle innings, and Jeanmar Gomez driving another nail into the coffin of the necessity of a “proven closer”. And yet, despite being in second place at this point, if you look at our current playoff odds, you wouldn’t actually know that the Phillies are off to a great start.

See that flat line across the bottom? That’s the Phillies. Their 24-17 start hasn’t moved the needle, at all, on our forecasts expectations for their chances of reaching the postseason. Okay, that’s not exactly true; they’ve gone from a 0.1% chance of winning one of the two Wild Card spots in our preseason forecast all the way up to a 0.3% chance of getting to the play-in game now. But their odds of hanging on to the NL East? Still close enough zero to round down when displaying one decimal point.
This is, to some, puzzling. A question in my chat yesterday brought up the point that our system is far more bearish on the Phillies hot start leading to postseason success than others; Baseball Prospectus gives them a 2.3% chance of winning the division and a 7.6% chance of getting a Wild Card spot, for 10% overall odds of reaching the playoffs. FiveThirtyEight is even more bullish than that, putting them at 4% to win the NL East and 13% to reach the postseason. So why is our system so stubborn relative to others attempting to look into the same crystal ball in order to see what the final standings will look like in October?
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