The SA Open sees some of the best golfers on the European Tour come together in Ekurhuleni.
It is also a combined event with the Sunshine Tour.
England’s Graeme Storm won the tournament last year – the eighth time a non-South African had claimed victory.
Top ranks Branden Grace and Charl Schwartzel teed off alongside Englishman Chris Wood in the pick of the field.
But it was England’s Chris Paisley who led the pack after day two alongside Frenchman Adrien Saddier.
Paisley hit a seven-under round of 65 to move to -13, while Saddier carded 63 on Friday to move level at the top.
The pair are four shots off South African Jacques Kruyswijk in third.
SA OPEN LEADERBOARD
Previewing the tournament, Storm said of his win last year: “I was more nervous during the last few holes of the regulation 72 holes than I was in the play-off, because I kind of knew the second place would give me a decent cheque.
“Obviously I wanted to win and obviously to come through on top against arguably one of the best players in the world right now is a great achievement for myself.”
He added: “I’m looking forward to defending this week. I’m little more relaxed than I was the previous season, but now I am really looking forward to the tournament and the year ahead.
“I played great all year last season, I think I had something like another five top-10s as well, and I was close to challenging in a few events.
“In the British Masters, which is kind of home soil for me really just 40 minutes away, I finished fourth there so the whole season went really well last year, you know if I can play like that again this season, then it would be good.”