Top-seeded Ivan Lendl breezed to a 6-0, 6-3 victory over South Korean Kim Bong Soo for his second victory in preliminary play of the Marlboro Championships in Hong Kong.
In the same group as Lendl, Kevin Curren defeated Kelly Evernden of New Zealand, 6-4, 6-4, for his first win.
Second-seeded Emilio Sanchez of Spain picked up his second victory in the Yellow Group by beating Finland's Aki Rahunen, 6-4, 6-3.
American David Wheaton beat Mark Kratzmann of Australia, 6-4, 6-2, for his second Yellow Group victory. Third-seeded Michael Chang beat fellow American Brad Pearce, 7-5, 6-4, for his second win in the Gold Group.
Jay Berger of the United States lost his second match, bowing, 6-4, 3-6, 6-4, to Sweden's Niclas Kroon. The winners of the four groups advance to the semifinals. . . .
John McEnroe had more trouble than expected, but defeated unseeded Udo Riglewski of Germany in three sets to reach the quarterfinals of the ATP CA Trophy tournament in Vienna, Austria.
McEnroe, the second seed, won, 6-7 (5-7), 6-4, 6-3, to become the final member of the quarterfinal field. He now will meet Sweden's Anders Jarryd.
Other quarterfinalists: Austrian Horst Skoff, who beat Soviet Dimitri Polyakov, 6-7 (6-8), 6-4, 6-2; Soviet Alexander Volkov, who defeated Jens Woehrmann of Germany, 7-5, 6-3, and Martin Jaite of Argentina, who eliminated Jan Siemerink of the Netherlands, 6-3, 6-3. . . .
Top-seeded Gabriela Sabatini reached the quarterfinals of the Porsche Cup tournament in Filderstadt, Germany, by beating fellow Argentine Mercedes Paz, 6-2, 6-2.
In other matches, Helena Sukova beat 17-year-old German Barbara Rittner, 6-2, 6-4; Jana Novotna topped Dinky van Rensburg of South Africa, 6-2, 7-5. Barbara Paulus of Austria advanced by ousting Rosalyn Fairbank of South Africa, 6-4, 6-3.