NASCAR Championship Odds - NASCAR Betting Odds and Insights | MyBookie

Last updated: {{July 2026}} Most bettors assume sportsbooks only make money when players lose, but that is only part of the story. The real engine behind sportsbook profitability is the vig, also known as the juice or bookmaker margin, which is quietly built into every betting market. Understanding how vig works helps explain why sportsbooks can generate consistent revenue regardless of who wins the game.