Is Arian Foster declining? That’s the question posed by Chase Stuart (@fbgchase) at his Football Perspective blog. I love reading Chase’s work, and it is worth reading his look at all the numbers relating to Foster. Rushing yards per game and per carry are down. His receiving yards are way down. His “success rate” measured by Football Outsiders metrics was great his first full year, dipped in 2011, rebounded some in 2012. Pro Football Focus numbers say his performance has been improving each year.