Top-seeded Goran Ivanisevic of Croatia and No. 5 Thomas Enqvist of Sweden rebounded from first-set losses to win their quarterfinal matches at the Infiniti Open in Los Angeles.
Ivanisevic beat Marcos Ondruska of South Africa 2-6, 6-1, 6-3 and Enqvist, defeated Michael Joyce 1-6, 6-1, 6-1.
Slowed by a strained left quadricep, Marianne Werdel Witmeyer hardly resembled the player who upset second-ranked Arantxa Sanchez Vicario a day earlier in the Toshiba Tennis Classic at Carlsbad, Calif.
“It probably should be Webster’s definition for disappointment and frustration,” said Werdel Witmeyer, who fell 6-2, 6-2 to France’s Sandrine Testud in the quarterfinal match.
Testud faces Lisa Raymond of Wayne, Pa. Raymond, ranked 22nd and seeded ninth, defeated 16th-seeded Gigi Fernandez of Aspen, Colo., 6-3, 4-6, 6-3.
Third-ranked Mary Pierce of France and No. 4 Conchita Martinez of Spain advanced to the other semifinal.
Top-seeded Thomas Muster advanced to the semifinals of the $435,000 Austrian Open with a 7-6 (7-1), 6-3 victory over Hungary’s Sandor Noszaly in Kitzbuehel, Austria.
Steffi Graf acknowledged that she was being investigated in Germany on suspicion of evading income taxes, but said despite being preoccupied by the matter, she does not plan to retire.
Graf appeared on national German television in an interview from New York.
She and her father, Peter Graf, who was arrested Wednesday, are suspected of evading $7 million in taxes.
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