MOSCOW (AP) _ American Alex O'Brien defeated Sjeng Schalken of the Netherlands 6-3, 7-6 (7-4) Friday in the quarterfinals of the Kremlin Cup tournament.

His opponent in the semifinals will be Goran Ivanisevic of Croatia, who needed only 56 minutes to breeze by Petr Korda of the Czech Republic 7-5, 6-0.

Top-seeded Yevgeny Kafelnikov, the hometown favorite, also of advanced by defeating Byron Black of Zimbabwe 7-6 (7-2), 6-2.

Also, Germany David Prinosil beat Andrei Olhovsky of Russia, 7-5, 6-2, and will play Kafelnikov Saturday.

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