Wimbledon title rivals Novak Djokovic and Jannik Sinner will move closer to a blockbuster semi-final showdown if they win their fourth-round ties on Monday as officals blamed human error for an embarrassing electronic line-calling blunder.

As well as Jannik Sinner is playing at Wimbledon at the moment, he doesn’t appear to need much in the way of help.

It took only seven points before the first forlorn shout of "C'mon Pedro" was warmly applauded by a Centre Court crowd who had already seen enough to know that Jannik Sinner was in for an easy Saturday afternoon at Wimbledon.