2017 US Open Champion @SloaneStephens gets the win in her @WTAFinalsSG debut, def. Naomi Osaka 7-5, 4-6, 6-1. Is she your pick to win it all? _ 📸: Getty Images _ #USOpen #wtatennis #tennis #wtafinals #singapore #SloaneStephens #NaomiOsaka #wtafinalssg