The 15% Stat Everyone Misquotes About Buying the Hook

Ask anyone who bets NFL teasers why 3 is such a big deal and you'll get the same answer: about 15% of NFL games are decided by exactly 3 points, more than any other margin. It's true, and it's the reason sportsbooks charge extra juice to buy a spread across that number. But almost nobody breaks that 15% down any further — and the breakdown matters more than the headline number.

Here's the part that gets skipped, and it trips people up on both sides of the number. That 15% includes two very different outcomes: games where the favorite won by 3, and games where the underdog won by 3 outright. It's tempting to assume the favorite-by-3 games are what help a bought favorite, and the underdog-by-3 games are what help a bought dog. That's not how it works. Buying a hook — on either side of the number — only ever pays off in one scenario: the favorite winning by exactly 3. Buy a favorite down from -3.5 to -3, and a 3-point favorite win turns your loss into a push. Buy a dog up from +2.5 to +3, and that same 3-point favorite win turns your loss into a push. But if the underdog wins outright by 3, the extra half point never mattered in the first place — the dog bettor already won without it, and the favorite bettor already lost outright no matter what number they had.

So I pulled the actual numbers. Using closing spreads and final scores for every NFL game since 1999 — 27 seasons, north of 7,000 games with a recorded closing line — I isolated every game that ended with a 3-point margin and checked which side, favorite or underdog, actually won.

The split: 57.5% of 3-point games were won by the closing favorite, and 42.5% were won by the underdog outright. That first group — favorite by exactly 3 — is the only one that actually matters for a bought hook, on either side of the bet. Not the even 50/50 you'd assume from the raw number, and not as lopsided toward the favorite as you might guess either, given that favorites win NFL games outright about two-thirds of the time overall.

Translated into what it means for your bet: it doesn't matter whether you're buying a favorite down to -3 or a dog up to +3 — the only outcome that rewards you either way is the favorite winning by exactly 3, which happens in roughly 8.7% of all NFL games. The other 6.4% (the underdog winning by 3 outright) isn't a separate benefit for the other side of the bet. It's just noise — an outcome where buying the hook, on either side, never factored into the result at all.

This is the same trap the Wong teaser shortcut falls into: a real, well-documented pattern in the data gets flattened into a rule of thumb that sounds precise but isn't quite. The relevant hit rate for buying the hook on 3 isn't the 15% headline number — it's the roughly 8.7% of games where the favorite wins by that exact margin, true no matter which side of the number you hold. Buying and teasing points around key numbers is still one of the better structural edges in football betting — but only if you're using the number that actually applies, not the headline version. That's the kind of detail built into Fred's Teaser Edge strategy.