Adrien Saddier of France carded seven birdies and an eagle in a faultless round of 63 for a share of the lead with England's Chris Paisley at 13 under-par after the second round of the European Tour's South African Open on Friday.
Paisley is yet to win on the European Tour but this tournament has a habit of throwing up English success, with three of the last four winners coming from these shores.
The 31-year-old soon had company in the clubhouse lead when Saddier completed 36 holes without a single bogey on his card, reeling off four birdies in five holes on the back nine before finishing in style with further birdies at seven and nine either side of an eagle-three as he converted a superb second to six feet.
Brett Rumford was the only Australian to make the cut after a second consecutive 1-under 71, Jason Scrivener struggling in his first event of 2018 with a second round 76 that included two double bogeys. "I started very well, it was quite slow but after I made three birdies in a row on 15, 16 and 17, it was quite good".
"I know Stormy and Andy pretty well".
"I am excited for the weekend but there is still 36 holes to play and I must try to stay focused during the last two rounds". "I have never been in this position before so I am just going to go and do my best. I certainly hope that I can keep that trend (of Englishmen winning the BMW SA Open) going".
"At the moment it is weird - I feel like I did not play awesome golf".
Koepka began with a bogey and added three more. Since the latter of those results it has been even worse: 5-for-14 with a best of T50.
Former Major title-holders Charl Schwartzel (139) and Ernie Els (141) of South Africa made the cut for the final two rounds.