Australian Open women's champion Madison Keys has returned to her career-best ranking and joins three other American women in the WTA top 10, while men's champion Jannik Sinner maintained his significant lead atop the ATP list.

With women’s tennis on the verge of an epic showdown between its top two players with the Australian Open title on the line, Keys, the 29-year-old American, crashed the party. She stormed back against Iga Swiatek to win their semifinal 5-7, 6-1, 7-6 (10-8).

World No1 denied third consecutive Melbourne triumph as American becomes one of the oldest first-time Grand Slam winners of the Open era