Every other day at Wimbledon has brought an opportunity to compare the greatest player in men's tennis and one of his heirs.

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.

Wimbledon enters its second week on Monday as things get serious at the All England Club. Novak Djokovic is still in the hunt for an eighth men’s singles title at SW19 that would see him pull level with great rival Roger Federer,