Kyle Larson, Ryan Newman fail postrace inspection at Darlington

NASCAR hands Ryan Newman crippling 15 point penalty

Newman left Darlington provisionally trailing Jamie McMurray by seven points for the final spot in the Chase via points.

Any potential penalty would hinder Newman's chances of qualifying for NASCAR's playoffs.

Kyle Larson, who as already clinched a spot in the Chase, was penalized 15 points for also failing postrace inspection at Darlington, and crew chief Chad Johnston was fined $22,500. There could be a points' penalty for both teams, which would be extremely costly in Ryan Newman's bid to overcome one of the other winless drivers for a Chase berth. The Richard Childress Racing driver lost 10 points earlier this year after Atlanta when he and his teammates were penalized after NASCAR confiscated the braces in the right-rear corners of their cars. That deficit to McMurray is now 22 points after the penalty.

In addition to the points penalty, crew chief Luke Lambert was fined $25,000. Drivers get a three-point bonus for winning a race, a point for leading a lap and another point for leading the most laps in a given race.

Pocono victor Chris Buescher has an 11-point cushion on 30th-place David Ragan.

But Newman could find himself facing a larger deficit entering Saturday's regular season finale at Richmond International Raceway, as his vehicle failed postrace technical inspection on Sunday.

NASCAR did not fine Cole Custer for tackling race-winner John Hunter Nemechek after Nemechek had bumped him twice and crashed into him coming to the checkered flag in the Camping World Truck Series race Sunday at Canadian Tire Motorsport Park.