Denny Hamlin's split with Chris Gabehart is far from the first surprising driver/crew chief change. Here's our top 10 of the last 20 years.

Recalling the 2004 season Busch said, "Me and Jimmy Fennig [his crew chief], once they announced the new point system, we sat down on Jan. 1 and had a game plan… 2004 was truly just a magical year." ...

Kurt Busch and Jimmy Fennig, pictured here in 2002, quickly built an effective rapport. Robert LeSieur/Motorsport Images ...

Former NASCAR driver Kurt Busch clinched his maiden Cup Series win during his sophomore year in 2002, courtesy of his guiding soul, Jimmy Fenning.

Two tires!" Fennig said. His crew made the switch before they dropped the car and that was the perfect strategy Kenseth needed to win the Sprint Cup race at Dover International Speedway on Sunday.

"One of the things NASCAR doesn't regulate is team chemistry, and the chemistry between Jimmy (Fennig) and the car chief and Kurt (Busch) was just awesome," said Jack Roush, owner of Busch's No ...

"This is a car that Jimmy Fennig built prior to this year, and it s first race was Richmond a few months ago, and it didn t qualify well at all," said Busch, who started 32nd on Sunday. "There s ...

(Crew chief) Jimmy Fennig had put in the same setup he and Mark had always used. I don’t know if my driving style was that close to Mark’s, but it worked. There was so much grip on corner exit.

“You know I learned a lot from my first team with (crew chief) Jimmy Fennig. We put a championship effort together and he taught me a lot about leadership.

Mark Martin’s crew chief, Jimmy Fennig, was furious when he watched Dale Jarrett’s No. 88 car on TV during the last pit stop. He and his crew were sure Jarrett’s crew left off a lug nut on ...

Jimmy Fennig has been named executive vice president in charge of competition by Roush Fenway Racing. The move positions Fennig, who joined Roush in 1997, to oversee all aspects of competition. Fennig ...