South African Charl Coetzee leads by one stroke at the inaugural Tshwane Open after play was called off due to bad weather on Friday. Coetzee was able to complete his second round at the European Tour event, moving to 12 under thanks to his 65, and leads by one stroke from Chile&aposs Mark Tullo and South African Dawie van der Walt. Van der Walt, however, will be forced to play the final four holes of his round early on Saturday at the Copperleaf Golf and Country Estate in Centurion after storm clouds rolled over the course to force a premature end to the day&aposs play. American Peter Uihlein is fourth on 10 under, with Frenchman Romain Wattel a shot back in fifth. Six men are chasing on eight under, including overnight leader Darren Fichardt of South Africa as well as English trio David Howell, Danny Willett and Richard Finch. More than 50 players are still to complete their second rounds, with play to get underway at 6:45am local time on Saturday to make up for lost time. Scott Arnold is the best of the Australian contingent on four under, with Daniel Gaunt a shot behind.