The US Open champion was trailing 6-3 when she retired with an upper left leg injury.
Oct 26, 2018
The Wimbledon champ pushed it to the limit in a 6-4, 5-7, 6-4 win over the US Open champ.
Oct 24, 2018
by Steve Tignor
Stephens, Bertens and Kerber, who beat Osaka (0-2) earlier, are all 1-1 in their group.
It was an unsettled, erratically compelling clash between two WTA Finals debutantes.
Oct 22, 2018
In another three-setter, Sloane Stephens defeated Naomi Osaka.
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