MELBOURNE, Australia (AP) — The Latest on Saturday at the Australian Open (all times local): 1:10 p.m. U.S. Open champion Naomi Osaka overcame a frustrating first set and a tricky rival to reach the fourth round of the Australian Open with a 5-7, 6-4, 6-1 win over Hsieh Su-wei. The fourth-seeded Osaka got a warning from the umpire for smashing her racket onto the court in the first set and was down a break in the second before gaining control of the match. The 33-year-old Hsieh, who plays with a double-handed grip on both sides and uses a mixture of spin and slice and drop shots to unsettle her rivals, reached the fourth round last year here and at Wimbledon, where she beat top-ranked Simona Halep. ___ 11 a.m. U.S.