Paul Casey had to shrug off a double-bogey. Jason Kokrak had to deal with a back-up driver. Both veterans overcame those obstacles on Friday, shooting six-under 65s to share the first-round lead of LIV Golf Mayakoba, the season-opening event of the new LIV Golf League.

Casey’s Crushers lead the team competition at El Camaleon Golf Course by three strokes with a collective 10-under. Kokrak’s Smash and defending team champions 4 Aces share second at 7-under.

Casey, who teed off on the 6th hole, rolled in a 60-foot birdie putt at the 16th hole and was cruising with a bogey-free 5 under through his first 14 holes. He then suffered his only bad swing of the day, a poor tee shot at the par-4 second that found the penalty area, leading to a double-bogey.

“I’ve never played here before,” said the 45-year-old Casey. “I’m used to desert golf, when you’ve got that feeling of two hazards either side of the fairway. This place just puts you on edge. There are so many difficult tee shots that kind of get your attention. They kind of make you a bit nervous, to be honest, in this wind.”

But after quickly dropping off the lead, the Englishman responded by finishing his round with three consecutive birdies to climb back to the top.

“Maybe I was in the zone for the last three,” Casey laughed. “It was a really good day. A blemish is a blemish, but it is what it is. I’d be surprised if anyone gets through this tournament this week without making some kind of error like that.”

Kokrak didn’t have any bogeys in his round, but that doesn’t mean it was a completely error-free day. An errant tee shot at the 14th hole forced him to scramble, but he saved par by chipping in from off the green. He also used his putter from off the green at the second hole to drain a long birdie putt.

The 37-year-old Kokrak started his calendar year with two top-20 finishes in the Middle East and was particularly pleased with his driver in that stretch. But on Sunday while working in a simulator before leaving for Mexico, the face of his driver popped out. That has forced him to use his backup driver this week at El Camaleon.

He said the back-up isn’t exactly identical, and described his first practice day on the range this week as “horrific, hitting it left.”