Tennis Roundup : Cash, Giammalva and Nystrom Advance

Upcoming tennis stars Pat Cash of Australia, Sammy Giammalva of the United States and Joakim Nystrom of Sweden won second-round matches Thursday in the $267,000 Belgian Indoor Championships at Brussels.

They joined 19-year-old Swede Stefan Edberg, his compatriot Anders Jarryd, and Heinz Gunthardt of Switzerland in the quarterfinals.

The fourth-seeded Cash defeated Matt Mitchell, 7-5, 6-4. The 19-year-old Australian fell behind, 4-1, in the first set but won six of the next seven games to take the set. In the second set, Mitchell made an early break, but Cash tied the score 4-4 and broke Mitchell again to win the match.

The sixth-seeded Nystrom needed more than two hours to beat British veteran John Lloyd, 4-6, 7-6, 6-4. After winning the first set, Lloyd was one game away from upsetting Nystrom, but the 22-year-old Swede rallied to win the second-set tiebreaker.

The 22-year-old Nystrom took early control of the third set, leading 3-1, and never relinquished his lead.

Earlier, the 21-year-old Giammalva convincingly beat countryman Chip Hooper, 7-6, 6-1. Giammalva, ranked 45th in the world, previously had upset third-seeded Kevin Curren in the first round of the tournament.

The second-seeded Jarryd scored a 6-3, 6-1 victory over compatriot Thomas Hogstedt, and Gunthardt rallied from a first-set loss to beat India’s Vijay Amritraj, 1-6, 6-3, 6-0.

At Dallas, third-seeded Helena Sukova of Czechoslovakia beat Melissa Gurney, 6-2, 6-0, to advance to the quarterfinals of a $150,000 women’s tournament.

Sukova’s victory over Gurney, of Palos Verdes, Calif., put her into today’s quarterfinals against the winner of Thursday night’s Andrea Temesvari-Bettina Bunge match.

Top-seeded Martina Navratilova and sixth-seeded Claudia Kohde-Kilsch had already advanced to the quarterfinals and will meet today. Unseeded players Myriam Schropp of West Germany and Catarina Lindqvist of Sweden will play in another quarterfinal match.