Carolina Panthers coach Ron Rivera said quarterback Cam Newton didn't cross the line into taunting with his "dab'' touchdown dance in the fourth quarter of Sunday's 27-10 victory at Tennessee. "As long as I don't feel he's instigating things, I don't think there should be issues,'' Rivera said on Monday as the Panthers (9-0) began preparing for Washington. Titans interim coach Mike Mularkey saw it another way a day after basically brushing it off as no big deal. "I think that's a little rub-it-in-your-face type of deal and there is a little code of ethics in the NFL and not a good move,'' Mularkey said. Newton skipped his normal "Superman'' celebration following his 2-yard run in the fourth quarter and went with an Atlanta-based dance called the "dab.'' His dabbin' upset Titans linebacker Avery Williamson, who got into Newton's face. Newton provoked the situation further by dabbin' again. Officials rushed in to separate the players before it escalated as...