Mike Lorenzo-Vera was delighted to pass a "huge mental test" as he fired an excellent 68 on day one of the US PGA Championship.
Bethpage State Park BK Course has long been renowned as one of the most difficult layouts in the world and Lorenzo-Vera came in knowing exactly what to expect this week.
The Frenchman has missed just one cut this season - and that was by a single stroke - in seven events with two top fives, and he spoke of his work with a sports psychologist at the Commercial Bank Qatar Masters.
He finished with birdies on the 16th and 18th to move to two under on Long Island, and revealed a trip to speak to his psychologist was going to be one of his first jobs ahead of round two.
"I knew that was going to be a huge mental test here and my head was ready to go there," he said.
"Sometimes my swing was not but my head was ready. It's tough to keep the head where it should be so I'm very proud of what I've done today.
"It's going to be very difficult. If I continue playing like that, I'm going to sleep less and less, shake more and more. I know what's waiting for me in the few days coming.
"First of all, I'm going to have a good rest, speak to my psychologist, I guess, and then here we go."