Many sportsbooks offer bettors the option to buy points on point spread bets in football, the most common winning margin in NFL games is three points. Live odds and sports betting lines with point spreads and totals. Sports betting odds including NFL, NBA and NCAA college basketball, MLB and CFL. Buying points or half- points relates to the NFL point spread or total. Most sportsbooks will allow bettors to buy a half point or more off the spread or total. One of the best sports betting and casino sites online, the Wizard of.