Djokovic won his 17th straight match at the tournament .
Radek Stepanek of the Czech Republic hits the ball to Serbia 's Novak Djokovic during their third - round match on Friday at the Australian Open in Melbourne , Australia .
Novak Djokovic won Novak Djokovic 's 17th straight match at the tournament .
Radek Stepanek of the Czech Republic hits the ball to Serbia 's Novak Djokovic during their third - round match on Friday at the Australian Open in Melbourne , Australia .