Alan Arthur Gustafson is an American NASCAR Cup Series crew chief who works for Hendrick Motorsports as the crew chief of their No. 9 Chevrolet Camaro ZL1 driven by Chase Elliott in the NASCAR Cup Series. He and Elliott won the 2020 NASCAR Cup Series championship together.

William Clyde "Chase" Elliott II is an American professional stock car racing driver. He competes full-time in the NASCAR Cup Series, driving the No. 9 Chevrolet Camaro ZL1 for Hendrick Motorsports and part-time in the NASCAR Xfinity Series, driving the No. 17 Chevrolet Camaro for the same team. He won the 2014 NASCAR Xfinity Series championship, becoming the first rookie to win a national series championship in NASCAR and the youngest champion in that series.