Is it frustration or simply good-natured trash talking among competitors?

Clint Bowyer is usually known as a relatively quiet, non-controversial driver. He’s the defending NASCAR Nationwide Series champion in his fourth full Sprint Cup Series season driving for Richard Childress Racing.

Mark Martin has competed full-time in the Sprint Cup Series for over 20 years. He’s one of the most respected drivers in the sport and is currently in position to contend for the series championship driving for Hendrick Motorsports. Martin has three wins so far this season, making it his best season since 1998 when he won a career-best seven races. 

Part of the respect that Martin has earned from fans and the competition has to do with the fact that he turned 50 this year and is still very competitive. MORE-->>