In 1908, Baker purchased an Indian motorcycle and began entering and winning local races. His most famous victory came in 1909 at the first race ever held at the newly built Indianapolis Motor Speedway. Baker also raced at the 1922 Indianapolis 500, placing 11th in a Frontenac. He later became the first commissioner of NASCAR. Baker was inducted into the Indianapolis Motor Speedway Hall of Fame in 1981, the Motorsports Hall of Fame of America in 1989, and the American Motorcyclist Association Motorcycle Hall of Fame in 1998.