During halftime of the Colts / Patriots game a couple of weeks back, there was an aberration at haftime at a certain exchange I play at that accepts Americans and isn't Matchbook. This exchange has several alternate lines in each NFL game, and in this particular game there was a separate contract for NE -3.5 and NE -4.5.
At halftime the buy of the -3.5 was almost equal to the sell of the -4.5, and I bought what was available at that minimal difference between the contracts that essentialy made the wager 100-1 odds. When the game landed on 4, a $4.00 investment turned into $400. I think the NFL push chart shows landing on 4 to be about 3% probability, so I had an overlay. I've hit a few other middles in NFL this season, but that was a pretty good one considering how minimal my risk was.
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