Cape Town - South African pair Jaco van Zyl and George Coetzee rocketed up the World Cup of Golf leaderboard at the Kingston Heath Golf Club on Friday.
Van Zyl and Coetzee combined to card seven birdies and one bogey for a fourball second round of 66 to lie 2-under overall at the halfway mark.
In Thursday's opening round the pair carded a four-over-par 76 in the alternate-shot format after mixing five bogeys with a lone birdie, to lie 25th in the 28-team field.
However, the South African duo now find themselves in a tie for 18th, 10 shots off the pace behind front-runners, Denmark.
The Danish duo of Soren Kjeldsen and Thorbjorn Olesen combined to card a sensational 12-under-par round of 60, just one stroke off the World Cup of Golf record.
The sizzling round moved Denmark into a three shot lead over China's Wu Ashun and Li Haotong, who shot a seven-under-par 65, and a further shot ahead of first round leaders, Spain.
The World Cup of Golf is a 72-hole stroke-play event with teams playing alternate-shot foursomes on Thursday and Saturday and fourballs on Friday and Sunday.
Scores on Friday after the fourball second round of the World Cup at the par-72 Kingston Heath course in Melbourne:
132 - Denmark (Soren Kjeldsen/Thorbjorn Olesen) 72-60
135 - China (Wu Ashun/Li Haotong) 70-65
136 - Spain (Rafa Cabrera Bello/Jon Rahm) 69-67
137 - USA (Rickie Fowler/Jimmy Walker) 70-67, France (Victor Dubuisson/Romain Langasque) 70-67, England (Chris Wood/Andy Sullivan) 71-66, Italy (Francesco Molinari/Matteo Manassero) 71-66
138 - Japan (Hideki Matsuyama/Ryo Ishikawa) 73-65, Sweden (Alex Noren/David Lingmerth) 72-66
139 - Thailand (Thongchai Jaidee/Kiradech Aphibarnrat) 73-66, Taiwan (Pan Cheng-tsung/Chan Shih-chang) 74-65, Netherlands (Joost Luiten/Darius van Driel) 75-64, New Zealand (Danny Lee/Ryan Fox) 75-64
140 - India (SSP Chawrasia/S. Chikkarangappa) 74-66, Wales (Bradley Dredge/Stuart Manley) 74-66
141 - Ireland (Shane Lowry/Graeme McDowell) 72-69, Austria (Bernd Wiesberger/Martin Wiegele) 73-68
142 - Belgium (Thomas Pieters/Nicolas Colsaerts) 73-69, South Africa (Jaco van Zyl/George Coetzee) 76-66, Australia (Adam Scott/Marc Leishman) 74-68, Portugal (Ricardo Gouveia/Jose-Filipe Lima) 74-68, Venezuela (Jhonattan Vegas/Julio Vegas) 74-68
143 - South Korea (An Byeong-Hun/K.T. Kim) 74-69, Canada (David Hearn/Adam Hadwin) 75-68, Scotland (Russell Knox/Duncan Stewart) 78-65
144 - Philippines (Miguel Tabuena/Angelo Que) 77-67
145 - Malaysia (Danny Chia/Nicholas Fung) 77-68, Germany (Alex Cejka/Stephan Jaeger) 74-71