Welcome to the 2025 NFL season! We’re finally to Week 1 and we get to see how our fantasy football rosters come together. And the most important and toughest fantasy decisions to make on a weekly basis come from the FLEX positions on your roster.

[It’s not too late — join or create a Yahoo Fantasy Football league for the 2025 NFL season]

You may be stacked at RB and WR, but that isn’t guaranteed to help you — it may even make setting your roster more difficult. Not to fear, we have FLEX rankings every week to help you pick the optimal lineup to defeat your opponent each week. This can also help you make decisions on which 2-3 RBs or WRs you want to roll out for Week 1.

[Week 1 Half-PPR Fantasy Rankings: QBs | RBs | WRs | TEs | FLEX | D/ST | Kickers]

Below, check out our FLEX rankings for Week 1:

Best of luck in your Week 1 matchups!