Angelique Kerber, Madison Keys get wins at WTA Finals

Top-seeded Angelique Kerber is the only player in the WTA Finals Red Group to stand at 2-0 in the round-robin stage after a 6-4, 6-2 win over Simona Halep on Tuesday in Singapore. American Madison Keys, who needed to win her match to stay in semifinal contention, prevailed, 6-1, 6-4, and never offered Dominika Cibulkova a break point opportunity.

All four players in the Red Group remain in the hunt for a semifinal berth. In the standings, Kerber is at 2-0, Halep and Keys are 1-1, and Cibulkova 0-2. This year marks the WTA Finals debuts for Keys and Cibulkova.

In Basel, Switzerland, in the Swiss Indoors first round, Stan Wawrinka rallied to beat 119th-ranked fellow Swiss Marco Chiudinelli, 6-7 (1), 6-1, 6-4. The top-seeded Wawrinka advanced after second-seeded Milos Raonic and sixth-seeded Grigor Dimitrov both let one-set leads slip and exited early.

World No. 3 Wawrinka clinched victory with his 16th ace on his fifth match point chance against his Davis Cup teammate. He next plays qualifier Donald Young of the United States.