NFL DFS 2023 Week 9 Helper: Optimal lineups, best undervalued options at each position and more fantasy tips from expert

There are plenty of storylines to consider before locking in your NFL DFS picks on sites like DraftKings and FanDuel. Matthew Stafford is a game-time decision with a thumb injury. If he sits, it could erode the value of receivers Cooper Kupp and Puka Nacua in the NFL DFS player pool. Rookie Aidan O'Connell will start at quarterback for the Raiders, potentially limiting the ceiling of receiver Davante Adams. Clayton Tune will make his first career start for the Cardinals and will face the Browns. Building NFL DFS lineups for Week 9? 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 few seasons, according to Fantasy Pros.

One player Gibbs is especially high on: Colts running back Jonathan Taylor ($6,400 on DraftKings, $8,000 on FanDuel). Gibbs is also targeting Patriots rookie receiver Demario Douglas ($4,000 on DraftKings, $5,200 on FanDuel), who is fresh off his bye week and will be in the starting lineup after Kendrick Bourne was sent to season-ending IR.

Gibbs also is calling for an underpriced running back you aren't even thinking about to score 20 or 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 running back 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!