Canadian teenager Leylah Fernandez has followed up her upset of defending champion Naomi Osaka at the U.S. Open by beating another past title winner at Flushing Meadows.

Emma Raducanu continues to roll at the U.S. Open, using a straight-sets victory to advance to the fourth round.

Defending champion Naomi Osaka repeatedly smashed her racket to the court, smacked a ball into the crowd, hid under a towel and imploded over the final two sets in a thir...