Guides · NFL ATS Records
Do NFL Underdogs Cover More Than Favorites?
Underdogs covered 51.6% of lined games from 2015 to 2025 and road underdogs 52.2% — close to, but not past, the 52.38% break-even.
Informational only. This guide describes public game data; it is not betting advice, and no wagering is offered or arranged here.
A little, but not by enough to matter. From 2015 to 2025 underdogs covered 51.6% of lined games and road underdogs 52.2%. Both fall short of the 52.38% it takes to break even at standard odds, and both are inside what chance produces over this many games.
Favorites win; underdogs cover
Favorites won 66.1% of NFL games outright from 2015 to 2025. Picking the winner is not the hard part. The spread exists to make the question hard: once the favorite has to win by more than the number, favorites covered only 48.4% of the time, and underdogs 51.6%.
By site and by size of the line
| Side | ATS record | Cover % |
|---|---|---|
| All underdogs | 1522-1427-75 | 51.6% |
| All favorites | 1427-1522-75 | 48.4% |
| Road underdogs | 946-865-50 | 52.2% |
| Home underdogs | 547-530-25 | 50.8% |
| Home favorites | 865-946-50 | 47.8% |
| Underdogs of 3 or fewer | 560-526-46 | 51.6% |
| Underdogs of 3.5 to 6.5 | 531-491-8 | 52.0% |
| Underdogs of 7 to 9.5 | 251-230-11 | 52.2% |
| Underdogs of 10 or more | 180-180-10 | 50.0% |
NFL games 2015–2025 with a closing line; pick ’em games (a line of 0) left out. Home and road rows count games at a team's own stadium only.
Every underdog band from +0.5 to +9.5 covered a little more than half the time, and road underdogs did best at 52.2%. Double-digit underdogs covered exactly half, 180–180.
Is it real?
Maybe a little, and it does not matter much either way. Two tests:
- Against chance. Over 2,949 decided games, a coin flip's cover rate has a standard deviation of about 0.9 points. Underdogs at 51.6% are about 1.7 standard deviations above 50%; road underdogs, over 1,811 decided games, about 1.9. Neither clears the usual two-standard-deviation bar.
- Against the price. At −110 the break-even rate is 52.38%. No row in the table reaches it. An underdog lean that is real but smaller than the sportsbook's cut is a curiosity, not an edge.
The usual explanation for a small tilt toward underdogs is that more public money likes favorites, and a line shaded slightly toward them costs the favorite side a little. That is plausible, and consistent with these numbers, but this data cannot show it: the public file carries closing lines, not who bet what.
You can see it in the Spread Dial
Set every dial on the NFL Spread Dial to 0× and the model predicts a 0-point margin for every game, which means it takes the underdog every time. Its back-test then becomes the plain underdog record since 2015, a useful baseline: any set of weights that cannot beat “always take the points” is not adding anything.
Each team's favorite and underdog splits are on its page under NFL ATS Records. A single team's split rests on far fewer games than the league rows above, so expect swings of five points or more that mean very little.
Sources
- nflverse, NFL schedules and results (games.csv) — CC-BY 4.0; final scores, closing spreads and totals, rest days, roof, kickoff weather
Figures are computed from nflverse's games file (CC-BY 4.0) over the 2015–2025 seasons by scripts/guide-measurements.mjs, so they do not move as new games are played. Not affiliated with or endorsed by the NFL or any team.