betting concept
Implied Probability
Also known as: Break-even Probability
Implied probability is the win probability a set of betting odds implies, derived by converting the odds into a percentage. It represents the rate at which a bet must win to break even at that price.
Implied probability translates American, decimal, or fractional odds into a win percentage. It tells you what the sportsbook thinks (after vig) the chance of the event is, and what your model must beat for the bet to carry positive expected value.
For American odds, two formulas cover every price. For a negative line (favorite), implied probability equals the absolute value of the line divided by the absolute value plus 100. For a positive line (underdog), it equals 100 divided by the line plus 100.
Worked example. A team is listed at -200. Implied probability = 200 / (200 + 100) = 66.7%. A model that projects this team to win 70% of the time identifies a 3.3-point edge over the market. That edge is what gets converted into expected value and ranked on Elite Picks’ board.
Implied probability across both sides of a market sums to more than 100%. The excess is the vig, the sportsbook’s built-in margin. A clean two-way market priced at -110/-110 implies 52.4% on each side, totaling 104.8%, which means the book is keeping 4.8% as juice. Removing vig (by normalizing the two sides to sum to 100%) yields the no-vig implied probability, which is the cleanest market benchmark for evaluating a model’s edge.
Elite Picks uses no-vig implied probability as the market baseline. Every prop on the platform compares the model’s projected probability against the no-vig implied probability of the line, and the gap drives the EP score.
Example
Odds of -150 imply 60% probability (150 / 250). Odds of +200 imply 33.3% probability (100 / 300).