Scott Vincent produced an impressive second round of 66 to join Branden Grace and Nacho Elvira at the top of the leaderboard in the second round of the BMW SA Open Championship Proudly hosted by the City of Ekurhuleni.
The Zimbabwean rattled in a birdie at the par five second before three successive gains from the seventh moved him to six under and two strokes behind leader Grace.
A birdie-bogey from the 11th kept Vincent at six under before he hit a stunning second shot on the par five 15 for an eagle chance, but had to settle for a gain, which he followed with another at the 16th.
The 26 year old could not convert the chance of a third birdie in four holes at the last as he finished six under for round to sit alongside the South African in the lead and set the clubhouse target.
Grace started the day on seven under as co-leader with Chase Koepka but when he birdied the par four third, he was in front on his own.
The World Number 30, who recorded a trio of eagles in a colourful first round of 65, was joined at the top by compatriot Justin Walters at eight under when he was at the turn, but the third proved to be his only gained shot for one under in his 16 holes before Vincent joined him at the top.
South African Jacques Kruyswijk opened up with back-to-back birdies from the tenth to move to six under but bogeys at the 12th and 17th hauled him back to four under.
Four gains in five holes from the 18th took the World Number 400 into the joint lead, while Spain's Nacho Elvira carded three birdies in a flawless first 12 holes to make it a quartet at the top of the leaderboard.
Walters, who was leading alongside Grace during the morning, was a shot adrift with one hole remaining after five gains and a bogey, while South Korea's Soomin Lee shot five birdies in his first 12 holes to sit with the South African and American Koepka, who had not started his round.
England's Chris Paisley, also yet to start, sat on six under on his own, while South Africa's Rhys West recorded six gains and a dropped shot in 11 holes to move to five under alongside former Amateur Championship winner Bradley Neil, who begins later in the day.