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.
| YEAR | BIKE | TEAM | CHAMPIONSHIP | RESULTS |
|---|---|---|---|---|
| 2015 | KTM | HSF Logistics Motorsport | FIM MOTOCROSS WORLD CHAMPIONSHIP MX2 | 30 |
| 2013 | EMX250 | 8 | ||
| 2014 | ADAC Youngster Cup | 2 | ||
| 2013 | EMX125 Championship | 3 | ||
| 2013 | Junior World Championship 125cc | 2 |
