WTA finals

Serena Williams beat Simona Halep 6-3, 6-0 to win her third-successive title at the WTA Finals and fifth overall.

Cara Black and Sania Mirza cruised to the doubles title at the WTA Finals with an authoritative 6-1, 6-0 win over defending champions Peng Shuai and Hsieh Su-Wei on Sunday.

Serena Williams is in the final of the WTA Finals after beating Caroline Wozniacki in a third-set tiebreaker on Saturday, winning 2-6, 6-3, 7-6 (6) to remain on course for a third-straight title in the season-ending championships.

Serena Williams will meet Caroline Wozniacki in the semifinals of the WTA Finals while Simona Halep will take on Agnieszka Radwanska.

Serena Williams won her opening match at the WTA Finals on Monday, beating Ana Ivanovic 6-4, 6-4 in the Red Group for her 16th consecutive victory at the season-ending tournament.

Serena Williams will play two of the tour's young rising stars in the round-robin stage of this year's WTA finals in Singapore.