How to read American odds
A negative number is what you'd risk to win $100. A positive number is what you'd win on a $100 bet. The further from zero, the bigger the implied edge for one side.
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A negative number is what you'd risk to win $100. A positive number is what you'd win on a $100 bet. The further from zero, the bigger the implied edge for one side.
Books price both sides so the implied probabilities add up to more than 100%. That extra is the vig — the house's margin. De-vigging strips it out to find the true fair line.
Not because they pick wrong — because they pay too much for every pick. Beating the vig long-term requires positive expected value, not just winning bets.
A unit is 1–2% of your total bankroll. Sizing every play the same protects you from one cold streak ending the season. Quarter-Kelly is the sweet spot.
After a loss, the brain wants to make it back fast. That's when you take bad numbers, force plays, and turn a bad day into a bad month. The slow way is the only way.
If you consistently bet a number better than where the market closes, you're beating the people who set the lines. That's the truest sign of skill in sports betting.