All Stories: Lauren Davis

MELBOURNE: Novak Djokovic underlined his supremacy in men's tennis on Friday as he marched unstoppably into the Australian Open fourth round -- along with Serena Williams, who raced through in just 44 minutes.

NEW YORK: Wimbledon champion Petra Kvitova and runner-up Eugenie Bouchard launched their U.S. Open campaigns with a bang, blasting by their respective first-round opponents in quick fashion on Tuesday.