MUNICH, Germany — Four players shot a 6-under 66 today to share the lead after the opening round of the BMW International Open, and John Daly struggled to an even-par 72 in a round that included five wild holes on the back nine.

Australian Peter O'Malley, chasing his first European Tour victory since the 2001 English Open, had a bogey-free round to share the top of the leaderboard with South Africa's Anton Haig, Singapore's Mardan Mamat and Rafa Echenique of Argentina.

"This is the time of year where you really want to be playing good golf and that's what I've sort of set my goal for throughout the year," O'Malley said.

Five players were a shot off the lead at 67, and six others shot 68. Miguel Angel Jimenez and Retief Goosen were three strokes back, while Colin Montgomerie and Paul Casey shot 70.

Daly had two double bogeys, a bogey and two birdies in a span starting on the 13th hole. The double bogey on the 16th came when the American's ball rolled down a hill twice. He was forced to hit out of a trap, sending rocks shooting out of the water.

"Just got some bad breaks. What can you do?" Daly asked. "I am hitting better than I am scoring."

Daly still holds the tournament record for lowest score of 27-under 261 in 2001. Since then, organizers have thickened the Munich Eichenried rough to toughen up an easy course.