Maddux's NFL Lines feed is unique as it offers live and up to date point spreads and after that the second half lines (which are posted once the games go to halftime). The NFL football odds presented here are and always be free of charge. Free NFL Live odds to track all movement across different sportsbooks as well as percentages to help you make smarter bets. Follow Sports Insights today!. NFL lines. The latest NFL line. NFL betting lines. Free pro football lines. Lines Preseason Week 4 - NFL Football Line Preseason Week Four, NFL Games 8/31, . Remember it may not be legal to wager on NFL games where you live.