Aryna Sabalenka celebrated securing the year-end world number one ranking with a crushing victory over Jasmine Paolini at the WTA Finals.
US Open champion Sabalenka was impressive on serve in a 6-3 6-1 win over the fatigued Italian in Riyadh, Saudi Arabia.
Victory over world number eight Paolini was Sabalenka's 60th win of the year and her 12th over a top-10 opponent.
Belarusian Sabalenka has spent 63 weeks in total at the top of the world rankings, including 55 in a row since October last year.
"I'm getting better and better every day," said Sabalenka.