DAYTONA BEACH, Fla. -- NASCAR has named Richard Buck, a NASCAR executive with a wealth of diverse experience in motorsports, as NASCAR Sprint Cup Series managing director. Buck will serve in the role held the past 12 years by John Darby, who will remain at NASCAR as managing director, competition. Buck and NASCAR's two other national series managing directors -- Wayne Auton (NASCAR Nationwide Series) and Chad Little (NASCAR Camping World Truck Series) -- now will report directly to Robin Pemberton, NASCAR vice president, competition and racing development. Buck currently serves as vice president, racing operations for the International Motor Sports Association (IMSA), a role he will maintain through the 2014 Rolex 24 At Daytona (Jan. 25-26), at which time he will assume his new position. More...