"Fade the backup quarterback" is a losing bet. The market already knows

It's the most intuitive edge in football betting: a team loses its starting quarterback, so you bet against them. Everyone can see the backup is worse. The trouble is that everyone includes the entire betting market, and the market moves the line the instant the news breaks.

We tested it the honest way — every game from 2014 through 2025 where a team's starter was known to be out before kickoff, roughly fifteen hundred of them. Betting against those teams at the closing line wins 48.8% of the time. That is not a small edge that got arbitraged down to break-even; it is an outright loser, below a coin flip once you count the vig.

The market prices it to within a third of a point

When a home team's starting quarterback is out, the market makes them, on average, a 1.1-point-worse team — and they actually perform 1.4 points worse. The line is off by three tenths of a point. That is not a market that's ignoring quarterback injuries. That is a market that has priced them so precisely there's nothing left on the table.

There's a deeper point buried here. A known injury is the one thing the market never misses — it is priced within hours, and priced well. It's that the market's edge is spread evenly across every game, a little bit of extra sharpness everywhere, not one big blind spot you can attack. Known information is priced. To beat the close you'd need information the close doesn't have — and a benched quarterback is the opposite of that.