Sun City - Ross Fisher and Padraig Harrington each took a share of the early lead at 5 under at the Nedbank Golf Challenge, before the first round was suspended due to bad weather.
Fisher began with successive birdies at the Gary Player Country Club and was 3 under after nine holes. The Englishman also had birdies at Nos. 10, 12, 15 and 16 to move to 7 under and a two-shot lead before a double bogey on 17 with the sky darkening brought him back level with Harrington.
Harrington made his first birdie at No. 8, adding four more in his next six holes before the siren sounded with lightning threatening.
Top-ranked Lee Westwood is 4 under through 15 holes after five birdies and a bogey.
South Africa's Ernie Els is the top-placed local player, currently tied for fourth place on 2 under after 16 holes.