Naomi Osaka knows how to get her US Open game face on: just go for a walk in New York City. "You walk around and hear the lovely honking and stuff. There is a lot of energy — you come back to the hotel very angry. I feel like it's a good exercise."

The Japanese star with New York roots took out her frustrations with the Big Apple's pesky pedestrians on Aliaksandra Sasnovich on Sunday, pummelling the Belarussian 6-0, 6-0. Osaka, 20, was nearly flawless, making just three unforced errors in the rout to reach the US Open round of 16 for the first time in three tries.