Point Spread Betting Explained
A point spread bet "handicaps" the favorite by a number of points to create a roughly 50/50 proposition. It's the most popular bet type in NFL and NBA betting — and the foundation of most sports betting strategy.
How the Spread Works
Each side has a number — favorites are listed with a minus (–), underdogs with a plus (+). The favorite must win by more than the spread; the underdog can lose by less than the spread (or win outright) to cover.
Oregon Example: Trail Blazers –4.5 vs. Suns
Suppose the Portland Trail Blazers host the Phoenix Suns. DraftKings posts:
- Blazers –4.5 (–110) — Portland must win by 5+ to cover
- Suns +4.5 (–110) — Phoenix can win, or lose by 4 or fewer
A $110 bet on either side wins $100 if the side covers. If the final is Blazers 112 – Suns 108, Portland wins by 4 — the Suns +4.5 ticket cashes.
The Half-Point and Key Numbers
Spreads ending in .5 (e.g., –4.5, +6.5) eliminate the possibility of a push (tie). Whole-number spreads can push — your stake is returned. In the NFL, the most common margins of victory are 3 and 7; in the NBA, 1, 3, 5, 7, and 10 are key numbers. Crossing a key number — buying a half-point to move from –3 to –2.5, for example — costs extra juice but can meaningfully shift win probability.
Asian Handicap (Soccer)
Soccer in Oregon — including Portland Timbers matches — typically uses Asian handicap spreads with quarter-goal increments (e.g., –0.25, –0.75) that split your stake into two portions to reduce push risk. A "–0.5 / –1.0" line means half your bet is on –0.5 and half on –1.0.
Common Mistakes
- Ignoring the half-point on key numbers — a Blazers –3 vs –3.5 difference in the NBA is small; in the NFL, it's massive
- Auto-fading the public — public consensus is sometimes right; reverse line movement is a better fade signal than ticket count
- Forgetting the vig — –110 means you need to win 52.4% just to break even
- Not adjusting for weather/injuries — late-week injury news on NFL Sundays moves NFL spreads more than any other factor