Naomi Osaka and Kiki Bertens face off to remain in contention for a spot in the @WTAFinalsSG semifinals! Who do you think will win? Comment with 🇳🇱 or 🇯🇵! 📸: @kikibertens 🆚 @naomiosakatennis _ #USOpen #wtatennis #tennis #instatennis #wtafinals #singapore #KikiBertens #wtafinalssg #NaomiOsaka