The Facts: Williams is signing with the Cardinals s source tells Jordan Schultz.

Diehards Line: Schulz was told Patrick Mahomes vouched for Williams, informing Arizona that he was a back he both liked and trusted. Williams had a great season in Kansas City last year, racking up over 1,000 scrimmage yards, with eight touchdowns and no fumbles on 191 touches. In addition, Williams is his proven ability in pass protection, meaning he becomes an asset on third downs as well. He'll join a backfield led by Pro Bowler James Conner, who re-signed for an additional three years, rookie Keaontay Ingram and holdover Eno Benjamin.