Building NFL DFS lineups for Week 13? See what SportsLine DFS guru Jacob Gibbs has to say before you lock in your NFL DFS picks. Gibbs uses a data-driven approach that has helped him consistently provide accurate rankings at every position. He has proven to be one of the nation's most accurate Fantasy rankers in recent years, posting the eighth-most accurate results over the past three seasons, according to Fantasy Pros.

One player Gibbs is especially high on: Seattle rookie RB Kenneth Walker ($7,000 on DraftKings, $8,100 on FanDuel). Gibbs is also going back to the well with Jets rookie Garrett Wilson ($5,300 on DraftKings, $6,600 on FanDuel).

Gibbs also is calling for an underpriced wide receiver you aren't even thinking about to score 15 or even 20 points on DraftKings and FanDuel! This player could be the difference between winning BIG or going home with nothing.

So who are the best players to target at each position? And which WR is set to put up a MONSTER point total? ... Join SportsLine here to see Jacob Gibbs' weekly Fantasy Football Helper, all from one of the nation's most accurate experts!