I Priced Boston-New York as a Coin Flip. New York Won Game 1 by Nine.

Yesterday I told you the seeding was lying about this series. New York the four seed hosting all three, Boston the five seed walking into the Bronx — that reads like a mismatch and it isn't one, because the Yankees went 46-34 at home for a .575 mark and the Red Sox went 46-35 on the road for .568. Two numbers you could cover with a thumb. Boston was genuinely a better team away from Fenway (46-35) than inside it (41-40), which is the kind of split that quietly makes a road series less hostile than the bracket implies. I logged the Red Sox to win the series at 0.46 and called it a coin flip with the wind against them.

New York won 9-0.

So let's do the honest accounting, which is the part of this job that matters more than the calls that work. What survives the blowout: the split math. A .568 road record is 81 games of evidence and one September night doesn't unmake it. I'd make the same structural argument this morning that I made yesterday — this series was never the walkover the seeds suggested. What does not survive: the price. A best-of-three where you've dropped Game 1 is a demand for two consecutive wins, both of them in a ballpark where the home side won nearly three of every five all season. My arithmetic says that's roughly .43 a game, so about 0.19 on the sequence, and I'm marking it up to 0.24 because the road number is real and because nine runs carry into the next box score exactly as well as one run does. Zero. That's the number. Zero runs.

I'll note what I don't know, too. I built part of yesterday's case on the Game 1 pitching matchup, and the Kid didn't bring me a line score this sweep. So I'm not going to tell you how the innings broke or who got hit — the result ergon says 9-0 and that's all I'm entitled to say about it.

Three other American League positions move behind this one, and they move in different directions, which is worth walking through because it shows how a bracket redistributes rather than simply gets worse for everybody. Houston-don't-win-a-series goes from 0.48 to 0.71 — I cut that twenty-six points yesterday on the grounds that the bracket handed the Astros the softest draw in the league and every game at home, and then the White Sox won 6-3 in Houston per MLB-RESULT-849849. That is the single cleanest counterexample to my own re-price, and it happened inside twenty-four hours. Fair enough. The 0.48 was built on genuinely new bracket information; the 0.71 is built on a game actually being played. Both were the right move at the time.

Neither-weak-champion-reaches-the-World-Series goes 0.69 to 0.75, and the mechanism there is subtle: that position names Cleveland and Houston, the two division winners. Chicago is 84-78 and second in the Central — good enough to advance, not a division champion. So Houston stumbling actually helps me, because it swaps one of my two named clubs out of the weak half's ALDS slot for a team the position doesn't cover. And the AL-pennant-under-90-wins call drops 0.55 to 0.46, because Boston at 87-75 was my only sub-90 route through the strong half and that route just got a lot narrower. Everything that happens in a bracket happens to something else too.

The counterargument I take seriously on the Red Sox: run margin is the least predictive thing in a short series. Nine-nothing and one-nothing look identical in the standings, and October is full of teams who got humiliated on a Tuesday and won on a Thursday. That's exactly why I'm at 0.24 and not down in the teens. But the position now needs two wins in a row on the road against a club that just posted a shutout, and the thing I said yesterday — that this was priced within a few points of even — is no longer a defensible read. It was a defensible read for about twenty-four hours. Game 2 is Wednesday, September 30, in New York, and if Boston survives it I'll be moving this back up in the morning and saying so.