Alexander Zverev had classy response to Novak Djokovic's medical retirement
Alexander Zverev had a classy response to Novak Djokovic’s medical retirement. Zverev won the first set of his semifinal match against Djokovic at the Australian Open in Melbourne 7-6. Djokovic missed a ball at the net on set point down 6-5 in the tiebreak and then decided to shake hands and retire from the match.