Jamie Donaldson dominates at the Nedbank Challenge at the Gary Player Country Club in Sun City, South Africa. Jamie Donaldson / Getty Images Jamie carded a -5 under par 67 in round three of the Nedbank Golf Challenge to lead the tournament at -16 under par, a three shot advantage going into the final round. It would have been a shot more had he not bogeyed the 17th hole, he said he was between clubs; "I was in between clubs and it put me in trouble but in the end I came out with a good five. I'm still in a strong position and I've got to go out there tomorrow and play really good golf. It's a tough field, a lead of three doesn't mean much among these guys." Thomas Björn and Ryan Moore are tied in second place at -13 under par, Thomas thinks he still has a chance tomorrow in the final round, if he can go low; "I got off to a good start and played solid golf. That's what you need to do on this course. If I can shoot 66 or 67 tomorrow, I'll give myself a chance. But you have to play sensible golf, not try and chase down the leader." Ryan, a recent winner on the US PGA Tour, carded a -3 under par 33 front nine, before picking up two further shots on the back to complete a -5 under par 67 third round. Five shots off the lead at -11 under par for the tournament are Thongchai Jaidee, Sergio Garcia and Henrik Stenson. Henrik will be ruing his compounded error, twice finding the water en route to a double bogey seven at the par four ninth hole. Sergio produced one of the shots of the day, to chip in for an Eagle 3 at the par five 14th hole, and followed that with birdies at 16 and 17. While Thongchai went bogey free in his round of -6 under par 66.