South African Charl Coetzee made four birdies in his last seven holes to move into a one-shot lead at the Tshwane Open after a second-round 65.
The 26-year-old world No 972 moved to 12-under-par early in the day at the Copperleaf Golf and Country Estate in Centurion, long before an afternoon thunder storm brought play to an abrupt halt.
"I haven't had this much fun in a long time," said Coetzee, who has yet to win in his professional career. "It's always nice to play well and it goes both ways, the better you play the more you enjoy it."
Coetzee was four clear of the field before the afternoon session, where Mark Tullo of Chile recorded a 66 to cut his lead to a stroke.
Dawie van der Walt was also 11-under par, including seven birdies, when his round was brought to a premature halt by the storm on the 15th.
First-round leader Darren Fichardt is also among those yet to complete his round, picking up just one shot in 16 holes to get to eight-under.
In all, 53 players will return on Saturday morning to complete their second rounds.
American Peter Uihlein, a former U.S. amateur champion, chipped in at the last for a round of 66 to lie fourth on 10-under.
