Henrik Stenson's hopes of donating the first prize of nearly £143,000 to his own charitable Foundation took a blow when he began the SAS Masters in Malmo with only a level par 73.

At 7,665 yards Barseback, Stenson's home course, is the longest in European Tour history. The world number seven thought that would be in his favour, but he trails England's Lee Slattery by six - and was relieved it was not by far more.

"I played like a pig and got away with murder," said Stenson. "I didn't play well at all, but the little Seve and Houdini in me was out there."

The Ryder Cup star was again wearing a green ribbon in his cap in support of an Iranian friend, as he did at The Open last week.

"It's a symbol for democracy in Iran and I felt it was an important gesture."

Slattery, ranked 497 places below Stenson, holds a one-stroke lead over Argentina's Ricardo Gonzalez.

Without a top 20 finish since he was fourth at the KLM Open in Holland last August, Slattery was first man to tee off at 7.30am and birdied the first four holes.

The last of those was a chip in and he did it again only two holes later before making a 10-footer on the long ninth to turn in a brilliant six under 30.

An hour-long suspension in play because of the threat of lightning took the wind out of the 30-year-old's sails, but after bogeying the long 12th on his return he got up and down from a greenside bunker at the 558-yard 16th and parred the last two for a six under 67 that kept him at the top of the leaderboard all day.