MELBOURNE, Australia (AP) — Sebastian Korda reached the first Grand Slam quarterfinal of his career by beating 10th-seeded Hubert Hurkacz in a fifth-set tiebreaker at the Australian Open on Sunday. Korda’s 3-6, 6-3, 6-2, 1-6, 7-6 (10-7) victory over Hurkacz followed up a third-round win against 2021 U.S. Open champion Daniil Medvedev, who had reached the final at Melbourne Park each of the past two years. Korda is a 22-year-old American whose father, Petr, won the 1998 championship at the tournament.