Calvin joins Team HRC for the 2018 season to compete in the MX2 category, riding the Honda CRF250RW. The 21-year-old South African joins Honda, like teammate Bogers, from the HSF Motorsport team.
|2015||KTM||HSF Logistics Motorsport||FIM MOTOCROSS WORLD CHAMPIONSHIP MX2||30|
|2014||ADAC Youngster Cup||2|
|2013||Junior World Championship 125cc||2|