AMANDA Coetzer beat defending champion and top-seeded Lindsay Davenport of the United States 2-6 6-4 6-3 on Friday in the Toray Pan Pacific Open in Tokyo. The upset sees the seventh seeded South African advancing to the semi-finals — along with Australian Open champion Martina Hingis, who defeated Steffi Graf of Germany 3-6 6-2 6-4. On Saturday, Coetzer meets fourth seed Monica Seles of the United States who beat sixth-seeded Anna Kournikova of Russia 7-5 6-3.