TENNIS ROUNDUP : Aggressive Siemerink Beats Edberg

Jan Siemerink, playing the net sharply, upset top-seeded Swede Stefan Edberg, 7-6 (7-5), 6-2, Thursday in the second round of a $525,000 tournament at Rotterdam.

Siemerink, 21 and ranked 42nd in the world, lost his first service game to Edberg. But Siemerink came back quickly, playing aggressively to win the first-set tiebreaker.

Siemerink has won only one singles title in his career, last year in Singapore.

In other matches, second-seeded Boris Becker of Germany swept Sweden’s Anders Jarryd, 6-2, 6-4; No. 5 Goran Prpic of Croatia beat the Netherlands’ Tom Nijssen, 7-5, 7-6 (10-8); and No. 7 Alexander Volkov of Russia defeated Jim Grabb, 6-3, 6-3.

Patrick McEnroe won by default after leading, 7-5, 2-0, when Belgium’s Bart Wuyts had stomach problems.

Becker will play McEnroe and Siemerink will face Volkov in today’s quarterfinals.

John McEnroe, seeded sixth, will face Alex Antonitsch, who beat Sweden’s Jan Apell, 6-4, 6-2.

Top-seeded Emilio Sanchez of Spain swept the last 10 games to complete a 6-2, 6-0 rout of France’s Thierry Champion and move into the quarterfinals of the $260,000 Arizona men’s tennis championship at Scottsdale.

Sanchez, ranked No. 10 and a winner this year in Sydney, Australia, will meet Brad Gilbert in today’s round of eight. Gilbert, the seventh-seeded player, eliminated Glenn Layendecker, 6-2, 6-2.

Two other seeded players also reached the quarterfinals.

Fourth-seeded Alberto Mancini overcame fellow-Argentine Gabriel Markus, 4-6, 6-4, 6-2, and fifth-seeded American MaliVai Washington beat Jaime Yzaga of Peru, 6-4, 6-3.