Passing touchdowns is a small-number prop. Most lines sit at 0.5, 1.5 or 2.5, and a single throw decides the bet. That makes it feel like a coin flip, but the price usually tells you the book doesn't see it that way.
This guide covers what drives touchdown passes, why the low line changes how you should read the bet, and where the price matters more than the number.
What the line is pricing
A passing touchdowns line comes from two things:
- How many touchdowns his team is expected to score. The game total and spread together give a rough team total.
- How many of those come through the air. Some teams throw near the goal line. Others hand off.
A quarterback on a team expected to score four touchdowns, on an offense that throws in the red zone, is a very different bet from one on a team expected to score two.
1. Team scoring comes first
No quarterback throws touchdowns his team doesn't score. Before anything else, look at the game total and spread. A high total with his team favored points toward more touchdowns. A low total, or a big underdog in a defensive game, points the other way.
2. Red zone play calling
Teams differ a lot in how they score once they're close.
- Pass-first red zone offenses give their quarterback most of the short touchdowns.
- Teams with a strong goal-line back often run it in from a yard or two, which takes touchdowns away from the quarterback.
- Mobile quarterbacks score some of their own touchdowns on runs, and a rushing touchdown doesn't count for passing touchdowns.
That last point catches people out. A quarterback who scores twice on the ground can have a great day and still lose a passing touchdowns over.
3. Receivers and protection
A missing top receiver or tight end can lower a team's red zone efficiency, since the best end zone targets are often the big ones. Injuries on the offensive line matter too: a quarterback under pressure settles for field goals more often. Betravon's player pages list teammates on the injury report by position.
Why 1.5 is harder than it looks
On a low-count prop, the gap between lines is huge. Going from 1.5 to 2.5 isn't one more of something that happens often; it can turn a likely over into an unlikely one.
That's why the price matters more here than on yardage props:
- Two books can both post 1.5 with very different prices. One might have the over at plus money and the other at a steep minus. That difference is the real line.
- Convert the price to a probability. -150 means the book thinks the over hits about 60% of the time, before its margin. The no-vig calculator strips the margin out so you can compare books fairly.
- Averages mislead. A quarterback averaging 1.8 touchdowns may still go over 1.5 less often than you'd expect if his games swing between zero and four.
Hit rates are useful here for the same reason. How often did he actually throw two or more?
Interceptions and garbage time
Interceptions don't affect this bet. Garbage time does: a quarterback trailing late can throw a touchdown in a game that was already decided. That helps the over in games expected to be lopsided against his team, which is one reason underdog quarterbacks are sometimes better over bets than their team total suggests.
Comparing books
Line shop the price, not just the number. On pick'em apps like PrizePicks and Underdog, the line is all there is, so compare it against the books' prices: an app line of 1.5 when the books price the over at -170 is a different bet than when they price it at +120.
A short checklist
- Check the game total and spread for team scoring.
- Know how the team scores near the goal line, and whether he runs it in himself.
- Check the injury report for his top targets and linemen.
- Read the price as a probability, not just the line.
- Use hit rates, not averages, on low lines.
Betravon lines up every book's passing touchdowns line and price for each quarterback. See today's NFL passing touchdown props, or every NFL player prop.