BRISTOL, Tenn. -- A flagman leaning against a manual override switch in the flagstand inadvertently turned on the caution lights in the final laps at Bristol Motor Speedway, leading to the final yellow flag that froze the field before Carl Edwards' victory Sunday night. That was the explanation from Robin Pemberton, NASCAR's vice president for competition and racing development, after fans and competitors were left in the dark following a mysterious caution that came out at the end of a marathon day-to-night race plagued by roughly five hours of rain delays. The field was immediately frozen per NASCAR policy, and hard rain once again began to fall almost immediately afterward, ensuring Edwards' first victory of the season. "It appears that in the flagstand, one of the flag people had leaned on the switch that is the manual override for the caution lights, and so that happened," Pemberton said. More...