HILTON HEAD ISLAND, S.C. — Garrett Willis couldn't give up on "Old Faithful," no matter how many flashy, new belly putters he tested out this week.

HILTON HEAD ISLAND, S.C. — Garrett Willis couldn't give up on "Old Faithful," no matter how many flashy, new belly putters he tested out this week.

Willis entered The Heritage seeking answers to his poor putting and had planned to park his longtime, Scotty Cameron model. As he walked to the range Thursday morning, though Willis just couldn't go through with it and asked his caddie to "go back to my car and get 'Old Faithful.'"

Good thing he did. Willis had a run of six straight birdies on the front nine on the way to a 7-under 64 and a one-shot lead in the suspended first round of The Heritage.

"Obviously, very excited about putting this well, and having a chance to making the cut for a change," Willis said.

He held a one-stroke edge over Arjun Atwal, Matt Bettencourt, Chad Campbell and Tim Herron and was two shots in front of Mark Wilson, Camilo Villegas and 2009 Heritage winner Brian Gay.

Luke Donald, No. 3 in the world, led a group at 67 in a round slowed by a rain delay of 2 hours, 16 minutes. Because of the delay, 18 players were unable to finish before dark.

China Open

At Chengdu, China, South Korea's Han Chang-won shot an 8-under 64 to take a one-stroke lead in the suspended first round of the China Open.

Han had six birdies in a front-nine 30 on the Luxehills International Country Club course.

Northern Ireland's Gareth Maybin, England's James Morrison, Wales' Bradley Dredge and Denmark's Soren Kjeldsen opened with 65s in the event sanctioned by the European Tour, China Golf Association and OneAsia Tour. South Africa's Keith Horne also was 7 under with four holes play.

Heavy morning mist delayed the start an hour and 24 players were unable to finish before dark.

Defending champion Y.E. Yang and Chinese star Liang Wen-chong opened with 68s, and three-time major champion Padraig Harrington had a 71.