 That same year, he won the 1975 125cc U.S. Grand Prix of Motocross, and finished second in the 250cc AMA Supercross series.Though he didn't win a title in 1976, he again won the 125cc U.S. Grand Prix of Motocross and placed fourth in the 125cc World Championship, the highest finish for an American in the world championships at the time.Smith was runner-up to Bob Hannah in the 1976 125cc national championship.