Henrik hunts big game in Africa

British Open champ Stenson out to increase Race to Dubai lead

British Open champion Henrik Stenson believes money-list rival and Masters champ Danny Willett will push him to the limit in this week's $7 million Nedbank Challenge, the penultimate event of the European Tour season.

Stenson holds a commanding lead of 252,163 points over the second-place Englishman and will secure a second order of merit title in four years if he wins in South Africa and Willett finishes outside the top 10.