Adelaide: American Paul Goldstein became the first player through to the knockout phase of the Adelaide International with a 7-6 (8), 6-1 round-robin victory over Australian Peter Luczak on Wednesday. Luczak broke Goldstein's service for a 2-0 lead, but immediately gave it back by dropping serve and did not earn another break point for the match. Goldstein won the tie-breaker 10-8 and then raced away with the second set, wrapping up the victory in just over 90 minutes. Third-seeded Radek Stepanek scored a 4-6, 6-2, 6-2 win over Russian Evgeny Korolev and Arnaud Clement of France beat Germany's Benjamin Becker 7-5, 6-1 in other round-robin matches. Lleyton Hewitt was idle Wednesday and plays his next match Thursday against Russia's Igor Kunitsyn. The knockout phase of the tournament begins Friday. The 32-player Adelaide tournament is the first to try the ATP Tour's new round-robin format in 2007. A dozen other tournaments are expected to experiment with the format during the season.