What is Value Betting?
Betting only when your estimated win probability is higher than the bookmaker's implied probability.
Value betting is the operating definition of disciplined sports betting. Every bet has to pass the test: do I think this hits more often than the price says? Without a yes, there is no bet. Models, projections and sharper books are tools to answer that question more accurately than gut feel.
Related terms
Expected value (EV) is the average profit or loss a bet pays per dollar staked if you repeated it under the same odds and probability forever.
The probability of a result that a sportsbook's odds are pricing in — calculated as one divided by the decimal odds.
The difference between the line you bet and the closing line at the same book — the most predictive single metric of long-run edge.
See value betting applied to a real slate
NotaSportsGuru runs the math behind every published leg — Parlay of the Day, player props, match lines — with the model’s expected value and edge on every line.