By Frankie Taddeo Our experts provide their Week 3 best bets for SI Sportsbook’s Perfect 10 contest. Have you heard the news? SI Sportsbook is offering a free contest for every week of the NFL season! By now, you should be thinking: “Where do I sign up and what do I need to do to win?” Bettors can enter SI Sportsbook’s free “Perfect 10” contest, which requires bettors to make 10 selections against the spread (ATS) for a chance at a share of a $10,000 prize each week during the NFL season. Every bettor who picks at least six games correctly will be awarded consolation prizes in the form of free…