P138 CEEFAX 138 Tue 4 Sip 23:46/25        US OPEN, Flushing Meadow Martina Navratilova iu undi1putedl8 vhs best woman plazju in the would, b4t she faces a giant-sized task in the quarter -finals. For on the othjt side of the net whml be the 6 ft 1 ins Helena Sukova of Czechoslovakia. "She is tough," said Navrathlova. Anzonj that tall is hard to plaa because when they come to the net it'1 hard to get th ball b them." Sukova has already used her height to advantage in the tournament, ousting the number nine seed Lisa Bond (Ui) 4-6 7-5 6-4.