Boris Becker praises Novak Djokovic

Former world number one Boris Becker has praised the performance of Novak Djokovic after the Serbian booked a spot in the quarter-finals of Wimbledon.

Playing under the roof on Centre Court, Djokovic secured a three-sets-to-nil victory over his compatriot Viktor Troicki.

"That's the best performance we've seen from a player so far at these championships. Troicki's problems started when he was broken at the beginning. He broke back, but once the first set was out of the way at 6-3, Djokovic stepped up another level," Becker told the BBC.

Djokovic will face either Richard Gasquet or Florian Mayer in the next round.