New York:Defending champion and world number one Justine Henin-Hardenne moved into the third round of the US Open at Flushing Meadows. She had a scare in the opening round of the US Open on Tuesday, where she trailed 15-year-old Czech Nicole Vaidisova 4-1 in the second set, but the champion rallied back for a 6-1, 6-4 victory. But Henin-Hardenne was far from her best against unseeded Tzipora Obziler of Israel on Thursday. In the first career match up between the two, the world number one took the opening set 6-2 with an ace. From there, Henin-Hardenne struggled at times to keep up with the ferocious shot-making of the 31-year-old Obziler, who had never been past the second round of a major tournament. The Israeli took the second set 7-5 on a single break of serve. The players traded service breaks three times at the beginning of the deciding set before Henin-Hardenne regained control of the contest, winning five of the last six games to close out the match. Hennin-Hardenne needed two hours and 14 minutes to subdue the 133rd-ranked Obziler 6-2, 5-7, 6-2. The world number one had 47 unforced errors vs 34 winners, eight double faults and a first service percentage of only 44-per cent in the victory. Myskina ousted In another match, French Open champion and No 4 seed Anastasia Myskina of Russia was ousted from the second round by a relatively little-known Russian compatriot. Myskina, who also reached the quarterfinals at the U.S. Open last year and the Australian Open in January, was only 47 per cent on her first serve, committed 37 unforced errors and was eliminated in one hour, 14 minutes by 175th-ranked Anna Chakvetadze 7-6 (3), 6-3.