CLIFTON, N.J., May 16 (UPI) -- Heavy rains Friday forced cancellation of the second round of the LPGA Tour's Sybase Classic, reducing the event to 54 holes.

Although several players had teed off when play was halted, their partial scores will be wiped out.

Tour officials originally gave thought to playing 36 holes Sunday, but that idea was eventually abandoned.

"The problem is our forecast on Sunday is not looking great, either. So that doesn't help us," said Sue Witters, director of tournament competitions for the LPGA.

Annika Sorenstam, who announced Tuesday she planned to retire at the end of the current season, shared the first-round lead at 5-under 67 with Song-Hee Kim and Rachel Hetherington.

Lorena Ochoa, ranked No. 1 in the world, was one shot back.