Pegula has withdrawn from the WTA Finals Riyadh presented by PIF due to a nagging left knee injury. She will be replaced in the Orange Group by the first alternate and World No. 9 Daria Kasatkina.

Jessica Pegula’s late season rally has ended with the world’s No. 6-ranked player withdrawing from the WTA Finals because of a left knee injury. Pegula, who earlier this year rose to a No. 3 world ranking after reaching the U.

World number two Iga Swiatek will play Daria Kasatkina on Thursday in her must-win match to stay in the hunt for a spot in the WTA Finals semi-finals after Jessica Pegula withdrew from the tournament with a knee injury.

China's Zheng Qinwen reached the semi-finals of the WTA Finals in Riyadh after claiming an impressive 6-1 6-1 win over Italian fourth seed Jasmine Paolini on Wednesday.

American star Coco Gauff defeated world No. 2 Iga Swiatek 6-3, 6-4 on Tuesday, sealing her spot in the semifinals of the year-end WTA Finals in Riyadh, Saudi Arabia.

Coco Gauff claimed just a second win in 13 meetings against Iga Swiatek to book her spot in the semi-finals of the WTA Finals in Saudi Arabia. The American’s 6-3 6-4 victory also ensures Aryna Sabalenka will finish the year as world number one, with defending champion Swiatek no longer able to overtake the Australian Open and US Open winner.

Coco Gauff beat defending champion Iga Swiatek 6-3 6-4 at the WTA Finals in Riyadh on Tuesday to reach the semi-finals and ensure Aryna Sabalenka would finish the year as world number one. It was Gauff's second win over Swiatek in 13 meetings.

China's Zheng Qinwen reached the semi-finals of the WTA Finals in Riyadh after claiming an impressive 6-1 6-1 win over Italian fourth seed Jasmine Paolini on Wednesday. In her WTA Finals debut, the 22-year-old became the youngest player to reach the semi-finals since Petra Kvitova in 2011.