A no-vig line is the price on each side of a market after stripping out the sportsbook's juice. Calculating the no-vig line on a moneyline market gives the implied "fair" probability of each side winning. +EV bettors compare their modeled probability to the no-vig probability — not the raw moneyline — to detect actual edges.
No-Vig (Fair) Line
The price on a market with the sportsbook's commission stripped out.