Joe Duffy has been putting a hurting on Draft Kings, Sports Interaction, Betway, Unibet, theScore Bet, Prize Picks, Parx, Betfred, BetRivers, FanDuel, WynnBET, PointsBet, Caesars, BetMGM, and offshore books for decades. The CEO of OffshoreInsiders.com breaks down how he uses the linesmakers own statements against them. Sorry bookies, what you say can and will be held against you. Duffy reveals a Golden Rule of gambling and gives specific MLB angles to exploit.