Building NFL DFS lineups for Week 18? 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 and help you navigate a week in which many key starters will sit out.

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: Cowboys WR CeeDee Lamb ($9,300 on DraftKings, $10,000 on FanDuel) as a building block worth paying all the way up for. To save salary, Gibbs is rostering Raiders fill-in RB Zamir White ($6,000 on DraftKings, $6,500 on FanDuel).

Gibbs also is calling for an underpriced tight end you aren't even thinking about to score 20, even 25 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!