Ash Barty and Novak Djokovic remain world number ones while Danielle Collins jumps up 20 places in rankings

Ash Barty remains world No. 1 after winning the Australian Open for the first time in her career on Saturday. Barty's straight-sets win over Danielle Collins means she has extended her ranking points lead over No.

2 Aryna Sabalenka. Ad/> French Open champion Barbora Krejcikova, who reached the quarter-finals of the singles, has risen up one spot into third. Australian Open'Amazing achievement' — Djokovic praises Nadal after securing 21st major18 HOURS AGO Iga Swiatek, who reached her first semi-final outside of a clay court, has moved up from ninth into fourth while Collins has surged up 20 places from No.

30 to No. 10. 'Gives people goosebumps' — McEnroe wowed by Nadal Tennis legends salute King Rafa — AO Diary Former world No.1 Garbine Muguruza, who was knocked out in the second round, has dropped four places into seventh.

In the men's rankings Novak Djokovic remains world No. 1 despite not playing in Melbourne. Rafael Nadal remains in fifth despite winning his 21st Grand Slam title.

Matteo Berrettini is the only men's player to move inside the top 10, leapfrogging Andrey Rublev into sixth after the Italian made the semi-finals at the Australian Open for the first time in his career. Taylor Fritz was knocked out in the Round of 16 by Roberto Autista Agut, but the American has moved from No. 22 to No.