IRVING, Texas - Sean O'Hair wants to be known for his game, not how he was pushed into the professional ranks while still in high school by an overbearing father.

With the way O'Hair is playing these days, his past is becoming less of the story, though it's no less disturbing.

The 24-year-old O'Hair shot a season-best 5-under 65 on Thursday in the EDS Byron Nelson Championship to take a one-stroke lead over defending champion Brett Wetterich and Anders Hansen after the tournament's first round without its namesake. O'Hair played the Cottonwood Valley course.

Wetterich's 66 included an eagle 3 on the 554-yard 16th hole when he hit his approach within 7 feet of the pin. His 20-foot birdie attempt for a share of the lead at the closing 440-yard hole at the TPC Four Seasons course slid just left of the cup.

One of the things Wetterich treasured about his only PGA Tour victory was the personal congratulation he got from Nelson at the 18th green after the final round. Wetterich was the last winner to have that privilege.

Luke Donald, with his ninth consecutive Nelson round in the 60s, and Scott Verplank were among five players tied for fourth at 67. Another dozen players posted 68s. Phil Mickelson opened with a 69.