Building NFL DFS lineups for Week 17? See what SportsLine DFS guru Jacob Gibbs has to say before you lock in your NFL DFS picks. He can help you put together the optimal NFL DFS picks on sites like DraftKings and FanDuel. He'll also help you decide whether you can trust potential fill-in starters like Seahawks quarterback Drew Lock and Packers running back Patrick Taylor.

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 few seasons, according to Fantasy Pros.

One player Gibbs is especially high on: Falcons RB Bijan Robinson ($6,600 on DraftKings, $7,100 on FanDuel). Gibbs is also rostering Ravens rookie receiver Zay Flowers ($5,600 on DraftKings, $6,300 on FanDuel). Flowers has been more of a focal point for Baltimore's offense since the injury to Mark Andrews, culminating in his nine-catch Week 16 performance.

Gibbs also is calling for an underpriced tight end you aren't even thinking about to score 10 to 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 in Sunday NFL DFS lineups? And which underpriced tight end puts 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!