FORT WORTH, Texas — Kevin Na stood over his ball after taking a drop in the rough beside the ninth green following two wayward shots, on his final hole of the day and with a share of the lead in the Fort Worth Invitational at Colonial.

As Na looked toward the hole more than 90 feet away, he saw the huge ridge going through the middle of the green. He then noticed the caddie of one of his playing partners move a bag from behind the green.

“Because I can chip it over the right down the other side,” Na said.

Instead, Na chipped in for an incredible birdie to wrap up an 8-under 62. That gave him a one-stroke lead over Charley Hoffman, who also had a bogey-free round Thursday. Jhonattan Vegas, Emiliano Grillo, Andrew Putnam and Beau Hossler all shot 64.

Na’s tee shot at the 399-yard ninth hole went into the rough to the right, then his approach flew over the green and settled against a temporary grandstand. His relief was a drop into more rough, but after the chip landed on the green, the ball started to curl toward the cup.

“It got over the ridge and I was like, `This is going to be good. It’s going to be close.’ Then it catches the right lip,” Na said, describing it as a perfect chip.

This is the sixth time Na has had a first-round lead, his third at Colonial.

“This is a great golf course for me. Every year I come here I have high, high expectations,” he said, before emphasizing a note that had been relayed by a PGA Tour media official. “Did you hear what he said? I’ve had the lead a few times. He never said I won, did he?”

Na’s best finish at Hogan’s Alley was a tie for seventh in 2007.His only PGA Tour victory came seven years ago in Las Vegas.

After starting the day with six consecutive pars, Na went 6 under on a five-hole stretch that he called one of the best in his career.