Williams carried the ball once for nine yards and added a nine-yard catch during Sunday's 31-21 loss to Houston.
Williams' 18 total yards was his third-highest total of the season. It's not much now, but Arizona is the market for a new No. 2 behind Adrian Peterson after the release of Andre Ellington. Williams was tied for second among Arizona backs Sunday with nine offensive snaps. D.J. Foster will be his main competition.