AUSTRALIAN OPEN ’19: Halep No. 1; Williams seeks 24th major

              FILE - In this Jan. 9, 2019, file photo, Simona Halep of Romania hits a forehand to Ash Barty of Australia during their women's singles match at the Sydney International tennis tournament in Sydney, Australia. Halep will be competing in the Australian Open that runs Jan. 14-27, 2019. (AP Photo/Rick Rycroft, File)

Women to watch at the Australian Open, where play begins Monday: