January 28, 2019 8:13 PM
ATP rankings: Djokovic tightens grip on top; Federer slides
Novak Djokovic strengthened his grip at the top of the men's ATP Tennis ranking today following his destruction of Rafael Nadal in the Australian Open final. Nadal held on to second spot in the rankings while Roger Federer slipped from third to six place. Alexander Zverev replaces Federer i...