naomi osaka in see-saw singapore battle

Sloane Stephens of the U.S. celebrates winning her group stage match against Japan's Naomi Osaka .(REUTERS)

Sloane Stephens sees off Naomi Osaka in see-saw Singapore battle

By Omnisport | Singapore
UPDATED ON OCT 22, 2018 11:52 PM IST
In a clash of two debutants at the WTA Finals, Sloane Stephens overcame Naomi Osaka to record a win in the Red Group.
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