Erik Van Rooyen during the third round a the Dublin Open . Photo: Craig Brough/Reuters

DUBLIN Erik van Rooyen will be favoured to become only the second South African to win the Irish Open as he takes a four shot lead into the final round on Sunday.

The 28-year-old  who would emulate compatriot Bobby Locke's victory in 1938  shot a scintillating six-under-par 66 to sit on 14-under for the £5.3million ($7million) tournament and tantalisingly in sight of his first win on the EPGA Tour.

Van Rooyen's closest pursuers are first round leader Ryan Fox of New Zealand -- the son of All Black fly-half great Grant Fox was joint fourth last year  and Sweden's Joakim Lagergren, who has returned to form after missing several cuts since landing his maiden tour win in the Sicilian Open in May.

"The mindset was just keep going, I guess," said van Rooyen.

"I wasn't very much aware of my score or the situation.

"You sometimes get in a groove as a golfer where things just happen and you hit great shots and great putts and that's what happened."

England's Danny Willett is another player who has shown signs of a return to his old self, injuries and a loss of confidence on the course  this season alone he has missed nine cuts in 12 tournaments  seeing the 2016 Masters champion slump to below 400 in the world rankings.

However, the 30-year-old is in contention for at least a welcome large pay cheque and even victory if van Rooyen implodes after shooting a three-under par 69 and sits five off the South African.

Willett, who rattled in four successive birdies, says he is not intimidated by the gap between himself and van Rooyen.

"It was nice to finish five shots back and there's still a lot to play for," said Willett.

"When you've got such a big lead it's a tricky place to be."

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