I would go with Mendy here....
Caddy will be injured after weeks 1-3 and Ward is and will be the man to be the sole RB#1 on that offense in due time. If you want a guy who might get some numbers for a week or two then take Caddy but that's all you "might" get.....if you want a guy who will split carries and eventually take over when FWP goes down then take Mendy!
My choice is Mendenhall easily!!!
Standard H2H 12 Team 1 Pt PPR, Start 1QB, 2RB, 2WR, 1 FLEX (RB/WR/TE), 1TE, 1K, 1 DEF