Several NASCAR Sprint Cup drivers expected to be contenders faltered in 2012. Kyle Busch (pictured) and Carl Edwards missed the Chase, and favorite Denny Hamlin came apart within it. Tony Stewart also stumbled a year after winning five Chase races en route to the title. Can these drivers return to true contention this season? Each bears watching as he battles to not only get back into the Chase - some like Busch and Edwards after a year’s absence – and into the fight for the title. (Streeter Lecka/Getty Images) Courtesy of FOXSports.comThe opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.