Sukova in Quarterfinals in Australia

Defending champion Helena Sukova of Czechoslovakia rallied to defeat Isabelle Demongeot of France 6-2, 4-6, 6-2 today to advance to the quarterfinals of the $150,000 Danone Queensland Open women’s tennis championship at Milton.

Top-seeded Sukova trailed 0-2 and 0-40 on No. 14 Demongeot’s serve in the final set before reeling off six straight games.

Officials said the air temperature at mid-afternoon was 112 degrees and the on-court temperature 130 degrees.

Sukova won 18 of the last 22 points as Demongeot, who had attacked impressively in the second set, crumpled under pressure.

Sukova will face No. 6 Natalia Zvereva of the Soviet Union in the quarterfinals. Zvereva defeated Etsuko Inoue of Japan 7-5, 6-4.

In other third-round matches, all three remaining Americans were defeated.

No. 10 Judith Wiesner of Austria defeated NCAA champion Patty Fendick of Sacramento, Calif., 6-2, 6-3.

Brenda Schultz of the Netherlands ousted 16th-seeded Kathy Rinaldi of Amelia Island, Fla., 7-5, 6-1, and Australian teen-ager Rachel McQuillan blitzed Stacey Martin of Kettering, Md., 6-1, 6-4.

At Adelaide, Australia, fifth-seeded Paul Annacone of the United States was eliminated in the second round of the Australian Hardcourt tennis championships today, beaten by Mark Kratzmann 6-4, 6-4.

The Australian left-hander has now won 32 of his 37 matches since the U.S. Open last September. Kratzmann won the U.S. Open and Australian Open junior singles titles but is currently ranked only 115th in the world.

Top-seeded Sergi Bruguera of Spain recovered from an opening-set loss in a tiebreaker and defeated Australian Brod Dyke 6-7 (6-8), 6-2, 6-3.

Bruguera, 18, a semifinalist at last year’s Italian Open, is playing in only his second tournament off clay courts.

West German Michael Stich surprised seventh-seeded Michiel Schapers of the Netherlands 6-4, 6-3.

Stich will face Bruguera in Friday’s quarterfinals.