Sabalenka earns year-end No.1 ranking

She defeats Jasmine Paolini with a score of 6-3, 7-5

Sabalenka mows down Zheng in a winning start to WTA Finals

He defeats Argentina's Francisco Cerundolo

The Australian seed defeated the Russian 6-4, 2-6, 7-6 (7/4)

He defeats Jarry in straight sets, will play Humbert next

The Olympic champion will clash with Kenin next

He suffers defeat against Luciano Darderi at the Vienna Open

She ends the American's nine-match winning streak in three sets

He defeats Fritz in his quest to win his 100th ATP title