International Open in Munich, Germany on Thursday (June 20). The reigning Open champion, 43, shot a 9-under par 63.
Denmark are tied in second place.
Ernie Els continued his fine form with a sublime nine under par 63 to take a one shot lead at the end of a low scoring first round at the BMW International Open.
The South African, who had a share of fourth last week at the US Open, fired five birdies in an outward 31 having started at the tenth. He
then turned for home with a 40 foot birdie at the short second, before producing one of the shots of the day at the par five sixth.
In a tie for second at eight under par is home favourite Martin Kaymer, who took one of the biggest crowds of the afternoon, and he duly rewarded those watching with nine birdies and just a single dropped shot en route to a round of 64.
Kaymer is in a tie with England's Matthew Baldwin, Sweden's Alex Noren and fellow afternoon starter Robert-Jan Derksen, who all signed for opening rounds of 64, while Alexander Levy (France), Tom Lewis (England) and Matthew Nixon(England) are all a shot further back on seven under par.
Austria's Bernd Wiesberger had looked like challenging Els' lead on the back nine during the afternoon, but a couple of dropped shots coming home saw him finish at six under par alongside America's Dustin Johnson and South Africa's Brandon Stone, who is making his professional debut in Munich this week. Germany'sMarcel Siem, another home favourite, is four shots off the lead on 67.