ランディ・マモラ
At the age of 11, Lenz became the youngest licensed Expert racer in AFM (American Federation of Motorcyclists) history; the previous holder of that honor was American GP racer Randy Mamola. Lenz also became the youngest rider to win an AFM race with his win in the Clubman Lightweight class on March 21, 2009, at Buttonwillow Raceway Park.