Fantasy football owners face tough start 'em, sit 'em questions right away in Week 5 with a potential battle of backup RBs in the Colts-Broncos Thursday night showdown, and things don't get much easier heading into the weekend. Fortunately, Sporting News NFL writer Vinnie Iyer is here to help with his Week 5 fantasy lineup advice and DFS tips.Usage/production trends and a new set of...