Zwartkops Raceway, the tight and twisty 2,4-kilometre circuit west of Pretoria, was, as expected, the sternest test of the country’s top riders so far this season when they gathered for round six of the Monster Energy SuperGP Champions Trophy on Sunday. Hot temperatures - 34 degrees Centigrade ambient and 53 degrees on the track – the slightest of breezes and the longest national championship races staged at Zwartkops for the two-wheeled brigade – double the normal 10 to 12 laps – took their …
