Point Spread Betting Explained
Spread betting is the most common bet type in football and basketball. The favorite gives points, the underdog gets them. This guide covers how spreads work, what 'juice' means, why some numbers (3, 7, 10) are more valuable than others, and where to find the best spread prices in Tennessee.
How a point spread works
A point spread evens the playing field. If the Titans are favored to beat the Jaguars, the sportsbook might post Titans -3.5 / Jaguars +3.5. To win a Titans -3.5 bet, the Titans must win by 4 or more points. To win a Jaguars +3.5 bet, the Jaguars must lose by 3 or fewer points or win outright.
Most spreads carry juice (also called vig) of -110 on each side, meaning you risk $110 to win $100. The juice is the book's margin. Some books shade to -105 or -115 to balance action when one side is heavily bet.
Key numbers in football
Football scores cluster around specific margins of victory. The most common margins:
| Margin | Frequency in NFL games | Half-point value |
|---|---|---|
| 3 | ~15% | High (~25-30 cents) |
| 7 | ~9% | Medium (~15-20 cents) |
| 10 | ~6% | Medium (~10-15 cents) |
| 6 | ~6% | Lower (~10 cents) |
| 14 | ~5% | Lower (~10 cents) |
Crossing a key number (e.g., moving a spread from -3 to -2.5) gains real probability mass. Use the half-point calculator to evaluate whether to buy a half.
Alternate spreads
Tennessee sportsbooks offer alternate spreads at different prices. For a base spread of Titans -3.5 (-110), you can typically find:
- Titans -2.5 at -130 (buying a half-point)
- Titans -1.5 at -180 (buying 2 points)
- Titans -6.5 at +160 (selling 3 points)
- Titans -10.5 at +320 (selling 7 points)
Alternate spreads are useful when you have strong conviction on a margin range. They're also a way to build value into Same Game Parlays.
Best TN sportsbook for spread bettors
Caesars typically opens NFL and SEC football spreads earlier and often a half-point sharper than competitors. bet365 has the deepest alternate spread markets. DraftKings runs the most aggressive spread boost calendar each Sunday.
Tennessee-specific notes
NCAA player props are prohibited in Tennessee, but team-side spreads (Volunteers -7.5 vs. Florida, for example) are fully available. Use the no-vig calculator to compare spread prices across books.
Frequently Asked Questions
What is juice or vig on a spread bet?
Juice (also called vig) is the small margin sportsbooks build into spread prices. The standard -110/-110 line means you stake $110 to win $100 on each side. The 10-cent juice is the book's margin and creates the 4.5% house edge on a single spread bet.
What are key numbers in NFL spread betting?
Key numbers are the most common margins of victory in football: 3, 7, 10, 14, and 6. Spreads that cross these numbers (e.g. moving from -3 to -2.5) gain real probability mass. Buying a half-point across a key number can be worth 20 to 30 cents in juice.
Should I buy the half-point in Tennessee?
Sometimes. Use the half-point calculator to compare the implied probability gain from moving the line against the price increase. If your probability gain exceeds the break-even cost, buying the half has positive EV. Key NFL numbers (3, 7) are usually worth buying; non-key numbers usually aren't.
Which TN sportsbook has the sharpest spreads?
Caesars typically opens spreads earlier and a half-point sharper than competitors on NFL and SEC football. Bet365 has the deepest alternate spread market. DraftKings runs the most aggressive spread boost promos each Sunday.
What happens if my spread bet pushes?
If the final margin lands exactly on the spread (e.g. a Titans -3 bet where they win by exactly 3), the bet pushes and your stake is returned. Half-point spreads (-3.5) eliminate the push possibility, which is why half-points carry value.
Can I parlay spread bets in Tennessee?
Yes. Spread parlays are standard at every TN sportsbook. A 2-leg spread parlay at -110 each pays roughly +264. A 6-leg spread parlay pays roughly +4742. The book edge compounds with each leg, so larger parlays are structurally unfavorable long-term.