A leading tennis expert had pinpointed the benefits that Novak Djokovic was enjoying with Andy Murray as his coach before his shock retirement from the Australian Open on Friday. Djokovic called it quits after dropping the first set against Alexander Zverev,

Minnows Uruguay stunned rugby sevens powerhouses Fiji and New Zealand in two astonishing back-to-back upsets on a remarkable opening day of the world sevens series' Perth leg on Friday.

Novak Djokovic had Andy Murray in his corner throughout the Australian Open before his run ended in the semi-final - ending his hopes of making more history in Melbourne