WATCH OUT FOR AT AUSTRALIAN OPEN

Here are other things to keep an eye on during the Australian Open, the year’s first Grand Slam tournament: OSAKA’S DEFENSE

Naomi Osaka’s first Grand Slam title defense ended with a fourth-round loss at the US Open. Now comes her second such effort and this one will come with a new coach at her side—and her fourth in the past year—wim Fissette, who has worked with players such as Kim Clijsters and Angelique Kerber in the past.

“She learns a lot from mistakes, and it’s normal at her age to make some mistakes,” Fissette said about the 22-year-old Osaka. “But she is a very quick learner with everything she does. She has her eyes open and her ears open. From what she told me, I believe she learned a lot from that experience at the US Open,” said the experienced coach.

WOZNIACKI’S EXIT

Caroline Wozniacki is playing what she says will be the final tournament of a career that includes the 2018 Australian Open title and time at No 1 in the WTA rankings. She’s 29. “I’m sure once the last ball is hit,” she said, “it’s going to be a bit emotional.”

DOUBLES FIELD

The Australian Open doubles competition will see some notable comings and goings. Bob and Mike Bryan, 41-yearold American twins who own a record 16 Grand Slam championships in men’s doubles, are competing in Melbourne for the final time; they’ve announced 2020 is their last year on tour. And Sania Mirza, a 33-year-old from India with a total of six major titles in women’s or mixed doubles, is back in Grand Slam action for the first time in two years after having a baby.