Pegula has withdrawn from the WTA Finals Riyadh presented by PIF due to a nagging left knee injury.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.

Elena Rybakina defeats World No. 1 Aryna Sabalenka at the WTA Finals, and Jessica Pegula withdraws with a knee injury.

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.

However, Gauff has played at a much higher level since the US Open and shaking up her coaching staff. On Sunday, Gauff defeated Pegula in straight sets during their Group Stage match at the WTA Finals: 6-3, 6-2.