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Phoenix, Arizona (Sports Network) - Ai Miyazato set a new course record Thursday with a 9-under 63 to grab the lead after the first round of the RR Donnelley LPGA Founders Cup.

A runner-up at this event last year, Miyazato holds a 2-stroke lead over Jee Young Lee, who tied the previous course record at Wildfire Golf Club with a 7- under 65.

Pornanong Phatlum (66), Gerina Piller (66), Candie Kung (66) and Brittany Lang (66) share third place at 6-under, while Katherine Hull-Kirk (67), Sandra Gal (67), Jiyai Shin (67) and Lexi Thompson (67) sit a shot back in seventh at 5- under.

2012 winner Yani Tseng carded a 2-under 70 in her first round to take a share of 39th place.

MORE TO FOLLOW.