CHARLOTTE, N.C. (AP) — The Panthers aren't prepared to call it a changing of the guard at running back. However, it's becoming increasingly clear that Carolina is shifting its focus in the backfield away from veteran Jonathan Stewart and toward rookie Christian McCaffrey, the team's first-round draft pick out of Stanford. The 30-year-old Stewart has been largely ineffective for the Panthers this season, averaging a mere 2.9 yards per carry — well below his career mark of 4.3 yards per carry.Read more on NewsOK.com