The 2013 NHRA Pro Stock championship battle during the Countdown phase has looked more like an eBay bidding war than the title battles race fans have seen in the past. There have been five lead changes, some during the course of an event, spread amongst three different drivers, Jeg Coughlin, Jason Line and Mike Edwards.

Headed into this weekend's NHRA Toyota Nationals, Coughlin is 45 ahead of 2009 champ Edwards, a six-time winner this season, 50 up on two-time champ Line and 73 ahead of teammate Johnson, who won the spring Vegas race.

The 2013 NHRA Pro Stock championship battle during the Countdown phase has looked more like an eBay bidding war than the title battles race fans have seen in the past. There have been five lead changes, some during the course of an event, spread amongst three different drivers, Jeg Coughlin, Jason Line and Mike Edwards.

Headed into this weekend's NHRA Toyota Nationals, Coughlin is 45 ahead of 2009 champ Edwards, a six-time winner this season, 50 up on two-time champ Line and 73 ahead of teammate Johnson, who won the spring Vegas race.

"I don't think the title will be decided one way or the other in Vegas, but we may leave town with a much clearer picture," Coughlin said. "You have to remember, the three guys behind us in the points are all past NHRA champions. It's going to be a thrill ride."

In order for a driver to win the title they must have 151 points or more at the conclusion of the event to earn his or her respective NHRA Mello Yello Drag Racing Series world championship title at the NHRA Toyota Nationals in Las Vegas. A maximum of 150 points is available at this event to one racer in each category. Only eight rounds of racing remain in the season.

Coughlin leads Mike Edwards by 45, Jason Line by 50 and Allen Johnson by 73. Coughlin needs to add 106 points over second place (more than five rounds) to secure the championship in Las Vegas. There are still nine drivers in contention.