Naomi Osaka reaches fourth round at Australian Open

MELBOURNE, Australia — Naomi Osaka smashed her racket into the court after losing the first set. She tumbled to the court when she tripped in the second.

The U.S. Open champion recovered both times and avoided slipping out of the Australian Open on Saturday with a 5-7, 6-4, 6-1 third-round win over Hsieh Su-wei.

The fourth-seeded Osaka got a warning from the umpire after she spiked her racket in frustration when Hsieh took the first set with three breaks of service. To get her mind back on track, Osaka said, she had to pretend like it didn’t happen.