Quick answer: An interception prop is a wager on whether a quarterback throws more or fewer interceptions than the posted line. Most QB interception props sit at 0.5 (will the QB throw any?) priced as a yes/no with American odds. Lines of 1.5+ exist for QBs against the top pass-defense teams in primetime. The stat grades on official NFL interceptions thrown, regardless of return outcome.
The Coin-Flip Nature of Interception Props
Interceptions are the highest-variance regular NFL prop. A QB might throw zero in five straight games then three in one. Books price both sides assuming a roughly 50% probability for an over-0.5 line on a starter, but the actual hit rate per game is closer to 45% for protected QBs and 55% for risk-takers. The vig matters more on this market than most. A line at -130 over and -110 under means the under bet is the value side most weeks for low-risk QBs. The opposite for gunslingers.
The Risk Profile by QB Type
Pocket passers with low aDOT and quick release (Kirk Cousins for most of his career, Brock Purdy) average around 0.7 INTs per game. Risk-takers like Dak Prescott, Caleb Williams, and Anthony Richardson average 1.0+. The book lines reflect this, but only roughly. Sharp bettors find their edge identifying QBs whose recent risk profile has shifted (a normally-protected QB facing a defense that forces second-half deficit and aggressive throws) and pricing accordingly.
The Sharp Edge
Interceptions correlate with three things: opponent pass-rush pressure rate, secondary turnover-creation rate (some defenses create picks at higher rates regardless of QB), and game script. A QB trailing by 10+ at halftime throws picks at 1.6x the rate of a QB in a competitive game. Books bake these into the lines, but injuries to either offensive line or opposing secondary often shift the math faster than the line adjusts. PropsBot’s calibration model treats interceptions as a high-variance market and posts 73.9% Win Rate on 21,066 graded NFL props by avoiding overconfidence on streaky markets.
Records and Common Lines
Single-game interception record (modern era) is 8 by Jim Hardy in 1950. Modern QBs basically never throw more than 4 in a game, and even 3 is rare. League leaders in any given season typically throw 16-20 interceptions across 17 games (about 1.0 per game). The career interception leader is Brett Favre at 336, which is more a function of longevity than recklessness.
Frequently Asked Questions
What counts as an interception for prop purposes?
Any pass intercepted by the defense, regardless of return yardage or return outcome. Pick-sixes count. Tipped balls intercepted count. Hail Mary picks count.
Why is the interception prop market so volatile?
Because interceptions are coin-flip rare events with strong game-script dependence. A QB might go five games without throwing one, then three in one game. Single-game variance is the highest of any regular NFL prop.
Are interception props worth betting?
Only with a calibrated model and tight bankroll discipline. The vig is high (often -125 or worse on favored side), and the variance compounds losses if you’re not edge-positive.
What’s a typical interception prop line?
Most starters sit at 0.5 priced as yes/no. Lines move to 1.5 only for primetime matchups against top-five turnover-creating defenses, or for known risk-takers in tough spots.
Do interceptions on Hail Mary throws count?
Yes. The official stat counts all interceptions equally. End-of-half Hail Marys often produce statistical interceptions that prop bettors didn’t see coming.
Part of the PropsBot.AI Sports Betting Glossary. Updated 2026-05-04.
