Ashleigh Barty's achievement in becoming the first Australian woman in 44 years to win the Australian Open title has seen her consolidate her place atop the WTA rankings. The 25-year-old has increased her lead over Aryna Sabalenka of Belarus -- who exited in the fourth round of the Australian Open -- to over 2,600 points. Danielle Collins's consolation for losing to Barty in Saturday's final is the highest ever ranking for the 28-year-old American as she soars 20 places to 10th. Poland's Iga Swiatek -- who Collins beat in the Australian Open semi-finals -- has also risen to her highest ever ranking, moving up five spots to fourth.