Hey, RotoBallers! Week 4 is already here! We are back with another edition of our FLEX rankings to help fantasy managers set the optimal lineup to win their league. Today, we will review our NFL team's updated Week 4 fantasy football FLEX rankings as of September 30th. We are here to help you set those winning lineups, so let's see where key FLEX options like Joshua Kelley, Chuba Hubbard, Nelson Agholor, Josh Downs, Jaylen Warren, Roschon Johnson, Michael Thomas, Breece Hall, Jahan Dotson, ...