Ivo Karlovic: 'Serve will be key against Andy Murray'

Ivo Karlovic has said that he will "definitely have an opportunity" to beat Andy Murray when he faces the British number one in the fourth round at Wimbledon.

The Croatian beat Jo-Wilfried Tsonga in four sets to set up a meeting with the 2013 champion, who also needed four sets to beat Italy's Andreas Seppi.

The 36-year-old, who has hit 136 aces in his first three matches, told reporters: "I feel good. It will not be easy, but if I continue serving like this, I will definitely have an opportunity."

Karlovic has only reached the quarter-finals once in 10 previous appearances at Wimbledon.