ORLANDO (Florida) (AFP) - Amy Yang and Seon Hwa Lee carded 5-under par 67s on Thursday to share the clubhouse lead when darkness halted play in the first round of the LPGA Tour Championship. Paraguays Julieta Granada was two strokes back on 69, with 27 players still to finish after a chilly day at Grand Cypress Golf Club. Neither Yang nor Lee seemed fazed by the unexpectedly cool temperatures, and they were happy to steal the spotlight from compatriots Jiyai Shin and Na Yeon Choi, who are vying to become the first South Korean to claim the LPGAs Player of the Year award. Neither got off to a rousing start, Shin carding a 77 and Choi a 73. Choi was four-under through 12 holes but dropped five shots in her next four holes. I dont think it was one bad shot, Choi said. I feel like I left some shots out there. Luckily, were all so close and still have a chance. Choi and Shin are the only players in the running for the money title. Chois 1,814,558 dollars in earnings are 34,790 dollars more than Shins total. But after a decade that saw player of the year honors go to either Annika Sorenstam or Lorena Ochoa, five players have a chance at the award. Shin and Choi werent the only players in the group to get off to a relatively slow start. American Cristie Kerr carded a 71, Taiwans Yani Tseng a 75, and Ai Miyazato of Japan an 80. Spains Tania Elosegui, British veteran Laura Davies and American Leta Lindley were in the clubhouse on two-under 70, with American Taylor Leon two-under through 15. Yang said caution was the key to her round. I just tried to make par every hole because the fairways, the rough are longer and thicker, and the greens are fast and slope a lot, she said. I just tried to play safely. She said shell stick to the strategy, and put the pressure on the chasing pack to try to get past her. The task is made tougher by the format that sees two cuts - to the lowest 70 scores and ties after 36 holes and to the lowest 30 players and ties after 54 holes. Especially with the cold weather again (Friday), Yang said. Another safe game, yeah. At least Ill try. The greens on the Jack Nicklaus-designed course were playing firm and fast, adding to the difficulty of mounting a challenge. Davies quipped that she couldnt even believe the layout bore Nicklaus name. He must have been having a very bad day, Davies said. Someone went mental on the greens.