2004 - Hamblin raced in the AMA 250cc Supercross series, his best finish a fifth-place at Salt Lake City… His best AMA 250cc Motocross Championship overall result was fourth-place at Southwick, Mass… Raced with American Suzuki team.

2003 - Hamblin contested a limited AMA 250cc Supercross season, his best result a fourth-place at Pontiac, Mich...He raced the AMA 125cc West Region Supercross series, his best result a fourth-place at Phoenix...Hamblin raced a limited AMA 250cc U.S. Motocross Championship season, his best result sixth-place overall at Sacramento, Calif...Raced with American Suzuki team.