Four of the top six players, including de Jonge, are winless on the PGA Tour.
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.
Players were able to lift, clean and place their golf balls in the fairways in anticipation of afternoon rain, which eventually developed and halted play for 1 hour, 18 minutes.
SWINGING SKIRTS LPGA CLASSIC
DALY CITY, Calif. (AP) — Lydia Ko settled for a tap-in birdie on the par-5 14th after her eagle chip deflected off the pin and the defending champion shot a 5-under 67 to take the first-round lead in the Swinging Skirts LPGA Classic.
The top-ranked Ko holds a one-stroke lead over three others, including 54-year-old Juli Inkster. Stacy Lewis, last year’s runner-up to Ko at Lake Merced Golf Club, was two strokes back at 3 under.
Ko will celebrate her 18th birthday on the course Friday. Paired with Anna Nordqvist and Lexi Thompson, Ko pulled on a jacket midway through the round in the afternoon chill and finished strong.
Ko had birdies on consecutive holes three times — Nos. 5-6, 8-9 and 13-14 — with just one bogey while playing after a two-week break from competition.
VOLVO CHINA OPEN
SHANGHAI (AP) — New Zeland’s Michael Hendry, Wales’ Bradley Dredge and England’s David Howell shot 4-under 68 to share the first-round lead in the Volvo China Open.
Hendry and Dredge were the only players with bogey-free rounds at Tomson Golf Course. Howell had five birdies and one bogey. Defending champion Alexander Levy of France was in the group at 69. He won last year at Genzon in Shenzhen.