Darren Fichardt and Jaco Van Zyl are tied at the top of the leaderboard on 15 under after the third round of the Africa Open.
The South African duo are two clear of overnight leader Adilson Da Silva at the East London Golf Club, while Frenchman Gregory Bourdy is a further shot back on 12 under.
Fichardt carded a 65 that saw him go six under through the first eight holes, his cause being helped by a stunning eagle at the par-five third.
However, he dropped a shot just before the turn and although a run of three birdies from the 13th onwards put the 37-year-old from Pretoria in front, a bogey at the penultimate hole meant he had to settle for a share of the lead.
Van Zyl - who is searching for his maiden European Tour triumph after 12 top-10 finishes - had just one blemish, at the 14th, in his score of 67.
Having played 28 holes on Friday, Brazilian Da Silva endured a terrible finish to his front nine, a triple bogey seven at the eighth being followed by a bogey at the next.
He did, though, bounce back with a birdie at the 10th before eight successive pars meant he signed for a 73, keeping him firmly in contention.
Bourdy's second successive 67 means he too will fancy his chances on Sunday, while Argentine Emiliano Grillo pushed himself right up the leaderboard with a stunning score of 64, leaving him alone on 11 under.
Jorge Campillo went one better than the South American, his 63 seeing him finish eagle-birdie-par-birdie. The Spaniard sits on 10 under alongside Chilean Mark Tullo (68) and Tjaart van der Walt of South Africa (68).