What is Live Betting?
Wagering on a game while it is in progress, with odds that update in real time based on the score, time remaining and momentum.
Also known as: in-game betting, in-play
Live markets are the fastest-growing share of US sports betting and the most challenging to beat. Books update prices in milliseconds using internal models; a sharp live bettor has to be faster than that or finds edges in slow-to-update markets like player props. Live betting carries higher vig than pre-game lines, so the edge required to be +EV is bigger.
Related terms
The difference between the line you bet and the closing line at the same book — the most predictive single metric of long-run edge.
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.
Placing a second bet on the opposite outcome of a live ticket to lock in profit or reduce risk.
See live 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.