Flex help for week 2

when it comes to AB how much playing time do you think he’s going to get? Start him over Waller and McCoy at flex? I have Gallup and John brown In at WR I like there matchups. So it boils down to starting 1 of the 3 at flex. AB might be limited a lot! Waller is going to get his targets. McCoy is on one of the best offenses. Opinions?