- Nicolas Colsaerts and Branden Grace share lead after third round of Volvo Golf Champions event
- Charl Schwartzel and Retief Goosen tied for third; Ryder Cup skipper Olazabal is fifth
- Louis Oosthuizen and Padraig Harrington are tied for sixth place on seven-under par
- Three-way tie for lead at Humana Challange in California at the halfway stage
Belgium's Nicolas Colsaerts and South African Branden Grace share the lead after the third round of the Volvo Golf Champions event at The Links at Fancourt in George, South Africa.
Both men finished on 10-under par after Saturday's play despite having contrasting individual rounds.
Colsaerts finished with a four-under par 69 after eagling the par-five 18th to finish on top with Grace, whose topsy-turvy back nine -- which included two double bogeys and four birdies -- meant he finished the day with a two-over par round of 75.
"I just had a couple unlucky shots that didn't bounce anyway in the fairways and got into pot bunkers and it happened on the tough holes which is a bit unfortunate., Grace said, EuropeanTour.com reported.
"But otherwise, I'm still really happy with the way I played and I thought I handled it really good. It was a long day so I'm still pleased to be at the top," he added, European Tour reported.
The South African, who was at the European Tour qualifying school only last month, now has the chance to claim back-to-back victories after triumphing at the Joburg Open last week.
But several big names are breathing down his and Colsaerts' neck with Charl Schwartzel and Retief Goosen one shot behind and tied for third place.
A shot further back is Jose Maria Olazabal whose is searching for his first win since 2005.
Europe's Ryder Cup captain posted a one-under par 72 to back up sub-par rounds of 71 and 68 in round's one and two.
Behind him sit 2010 Open champion Louis Oosthuizen and double Open winner Padraig Harrington who are tied for sixth place on seven-under par.
Ernie Els' third successive round of 71 gives him outright possession of eighth on six-under par, with another Open champion Paul Lawrie, who carded a one-over par round of 74, tied for ninth with Sweden's Alexander Noren.
Northern Ireland's Darren Clarke fired a level-par round of 73 to leave him in a three-way tie for 11th place on four-under par.
Meanwhile at the Humana Challange in La Quinta, California, there is a three-way tie for the lead after two rounds with American's Ben Crane, David Toms and Mark Wilson all on 16-under par.
Three shots separate them from a chasing pack of four which includes Colombia's Camilo Villegas and America's Harris English, Chris Kirk and Bobby Gates.
A clutch of six players, including Chris DiMarco and Brandt Snedeker, are one shot behind them on 12-under par.
A further nine players including Zach Johnson and Ryan Moore - who posted an 11-under par round of 61 on Friday - are five shots off the pace on 11-under par.