"Fade the backup quarterback" is a losing bet. The market already knows
Across twelve seasons, betting against teams whose starting QB is known out — the classic sharp-sounding angle — wins just 48.8% of the time. The market prices a known quarterback injury almost perfectly, to within a third of a point.
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.