Top-seeded Martina Navratilova's power game was too much for Tracy Austin in the semifinals of the Slims tournament in Houston. Navratilova beat the third-seeded Austin, 6-2, 6-2, and will play Sylvia Hanika in the final. Hanika, seeded seventh, defeated Eva Pfaff, 7-5, 6-1 in the other semifinals match.

Hanika, who lost to Navratilova in the final of last week's tournament at Capital Centre, is one of only three women to beat Navratilova in her last 102 matches. Austin faced her strongest challenge since recovering from a back ailment against Navratilova and was not up to the task. The match ended controversially; Navratilova hit the line on match point, and, despite protests from the crowd, the umpire upheld the linesman's decision.

Pfaff struggled through the singles and doubles draw, playing four three-set matches and four tie-breaker games.

"I was making a lot of unforced errors in the first set," Hanika said. "But she was either hitting out or into the net. Sometimes I thought she was going to fall asleep, she looked so tired" . . . .

In Manila, Enrique Capulong and Raymund Suarez defeated Rahman Ramlal and Adam Malek, 6-3, 7-9, 6-2, 7-5, in doubles to clinch a Philippines victory over Malaysia in their Davis Cup Eastern Zone tennis series.