I feel like the Will Smith meme with this yearly fantasy format article. I keep expecting that the market will be flooded with articles about how the idea of Zero RB versus Robust RB is idiotic because the former is only viable if you’re allowed to start four or more wide receivers, and the latter is default if you can only start a max of three.To determine the best draft strategy, first we have to cover what Flex 9 and Flex 10 mean. You know what “Flex” means (WR, RB or TE, in most cases). The 9 or 10 is the number of starters in your lineup, and that changes mostly because you have to start either two WRs in 9 or three in 10 (and then perhaps another in the Flex). I get asked questions about bigger lineups or more Flex spots. So to make it simple, it’s just the maximum number of WRs you could possibly start. If it’s four or more, you need to come out of the draft with a WR room that can contend for the best in your league — that’s your top objective. If it’s no more than three, including the Flex, then your goal is (snore) to have the best RB room.Why am I bored with having the best running back room? Because there is no art to it. It’s a function of purely the power of expending draft capital and largely where you happen to draft. Plus, the winner is basically the team that survives the injury gauntlet the best. Running backs you hit on outside of the top-100 picks are typically those who benefitted from unexpected (and not projectable) expanded playing time. Wide receivers you hit on in that range are typically starters who are guaranteed to get snaps but who we bet will be more efficient with them than the market thinks.My rankings ignore overall order and instead focus on positional ranks. Even within the same Flex 9 or Flex 10 formats, drafts can vary wildly, so it’s always imperative to know how deep your league has drafted at each position before every pick. But Flex 9 and Flex 10 amplify these differences dramatically, as they are totally different games.Yet, if you mention “Flex 9 and Flex 10,” you’ll get blank stares. I blame Best Ball leagues, which the expert community loves as do many passionate fantasy football-obsessed managers. But the number of starters is a minor consideration in Best Ball, so it’s all about ADP in a vacuum. And since there are no in-season moves, running back becomes as important as in Flex 9 since everyone is padding the position to cover for potential injuries. Therefore, everyone gets in the habit of citing overall ADP with its running back bias and disdain for WR-heavy roster constructions for months leading into the drafts we all actually care about.You know the experts are through the looking glass when they quote their market shares of players and portfolio diversification. Most of us are drafting one or two big leagues, not building fantasy football index funds.