Brad Keselowski drops Nationwide race at Kansas

Associated Press Modified: October 2, 2012 at 2:31 pm •  Published: October 2, 2012

"Dale Jr. was kind of a role model for me in that sense, with how he has Kelley and the things she does for him - and keeps him straight in some ways," Keselowski said. "Sometimes, you're just looking for somebody that's got your back. I do have other people who have got my back, but it's different when it's family."

Keselowski believes his performance has improved since his sister moved in with him and began helping him run his foundation. She's 10 years older than he is, and he joked that she is his "mind coach" — a riff on what the Carolina Panthers recently said they've obtained to help quarterback Cam Newton.

Since Nicholas moved in, Keselowski has finished in the top 10 in 12 of the last 13 races. He opened the Chase with a win at Chicago, finished sixth at New Hampshire, and won Sunday at Dover.

"Maybe she's my good luck charm," he said.