Naomi Osaka apologized for not congratulating Victoria Mboko for her victory after their Montreal Open women's singles final.

WTA Montreal tournament champion Victoria Mboko and beaten finalist Naomi Osaka officially withdrew on Friday from the ATP-WTA Cincinnati Open in decisions openly telegraphed after their Thursday night final in Canada.

Naomi Osaka lost to Victoria Mboko in the WTA 1000 Montreal final, but her comeback is still moving in the right direction.