Vegas lines are more than just a predictor of the final score of games. They also can be a secret weapon in Fantasy.

Before you start using them to crush your Fantasy week-to-week lineups, you'll want to hear what Fantasy analyst Jen Ryan has to say. She's a contributor at FootballDiehards.com and on SiriusXMFantasy's "Football Diehards" show. Ryan, who has been an FSWA finalist for "Best Football Series," goes in-depth every week on SportsLine on using Vegas lines to make Fantasy decisions in both season-long and daily.

One tip we'll give away this week: Ryan is extremely high on Panthers running back Christian McCaffrey against the Buccaneers, a matchup with one of the highest totals (54.5) on Sunday.

"McCaffrey ($8,800 on DraftKings and FanDuel) is the lifeblood of the Panthers' offense and the highest priced player in this game," Ryan said. "Don't worry about the price and the 26 points required to hit value; over his past five games, he is averaging 30.4 points per game. McCaffrey is the only running back in football to have played on 100% of his teams' snaps in a game this season, something he has done in five games. He's been on the field for less than 94% of the snaps just once. His volume and opportunity are a notch above the rest."

Ryan has also identified a quarterback you're not thinking about who is in position to exceed his value this week in what Vegas says will be a close matchup. This pick could help you cash in big time in Week 13.

So how can you use Vegas lines to crush your Fantasy lineups this week? And which quarterback has great value because of his matchup? ... Join SportsLine now to see Jen Ryan's guide on how odds and Fantasy can work together, all from a proven Fantasy and Vegas expert!