AVONDALE, La. — Boo Weekley solved his uncharacteristic ball-striking problems with new shafts.

A day after changing the shafts in his irons, Weekley shot an 8-under 64 on Thursday in the Zurich Classic of New Orleans for a share of the first-round lead with Brendon de Jonge.

“You go to tinkering around with clubs and you finally find a shaft, and (True Temper) finally stepped up and built me a set of clubs and they worked,” said Weekley, the three-time PGA Tour winner who missed the cuts in four of his past six tournaments. “I’ve been missing something in my game, and it was because I (haven’t) been able to control my irons. It just starts messing with you mentally.”

Weekley had an eagle, seven birdies and a bogey at rain-softened TPC Louisiana. De Jonge, from Zimbabwe, had eight birdies in a bogey-free round.

Sean O’Hair and Canada’s David Hearn shot 65 on the Pete Dye-designed layout.

Tour rookie Mark Hubbard had five consecutive birdies in the middle of his round and finished with a 66. He was tied with Erik Compton, Brian Davis, Greg Owen and Daniel Berger.

Dustin Johnson, ranked No. 7 in the world, was at 67 in a large group that included former Zurich winner K.J. Choi and Jason Day, the highest ranked player in the field at No. 6.