Latavius Murray or Mike Williams?

PPR. Which do I put in my Flex?

My Line-Up:

Mahomes
Diggs
Tyreek
Juju
Hooper
Cohen
Ekeler
Boyd
Williams/Murray

Opponents Line-Up:

Cam
OBJ
Sterling
Robby
Brate
Barkley
Howard
Manny Sanders
Chris Hogan

Murray, only RB with Cook out. Mike Williams is hit or miss.