Jeremy Mayfield says he has his own drug test results that prove his innocence. The Jeremy Mayfield situation continues to get uglier as time goes by. Last week NASCAR officials were back in court trying to get Mayfield's temporary reinstatement revoked. They said Mayfield tested positive again for methamphetamines, and the court documents presented contain a statement from Mayfield's stepmother, Lisa Mayfield, that she saw Mayfield make and use drugs in the past.

Mayfield, who initially failed a drug test at Richmond earlier this year and was suspended from NASCAR, told several news outlets that his stepmother is making it all up and that he has his own drug test results, which show no drug use.

A name to remember

Here's a name race fans likely will be hearing more in the future — Parker Kligerman.

The 18-year-old development driver for Penske Racing originally was set to run a limited schedule in ARCA this season. But he's dominating the series, and his last-lap win at Kentucky Speedway on Saturday was his fourth straight victory and his fifth in the past six races. He's also leading the points standings.

NASCAR Kurt Busch said he likes the new double-file restart rules despite recently being involved in a wreck shortly after one of those restarts. Kligerman's Kentucky victory came at the expense of Alabama short tracker Grant Enfinger, who was leading late in the race even though his tires were more worn that Kligerman's.

"I knew he was going to go high. I had to go low, but I kept getting loose at the bottom and I didn't want a repeat of last time here (when I spun out and finished 17th)," Kligerman told reporters afterward.

Busch praises new restart rules

NASCAR's new double-file restart rules have teams adjusting their cars' set-ups to capitalize on the opportunities they provide, according to Kurt Busch.

He said the restarts, where the leaders start side-by-side with the lapped cars in the back, offer the best chances to pick up positions at many tracks.

"You're not necessarily focused on long runs, you focus on short runs," Busch said. "If you can gain spots early on in a short run, you will move up in the standings."

He said he liked the new double-file restart rules, even if it was just after one of those restarts that he tangled with Jimmie Johnson at Chicagoland Speedway, a confrontation that led to what could be the start of a minor feud.

"It's been a win-win all the way around," he said.