Andy Murray, ranked No. 3 in the world, is looking to make his third Wimbledon final this year, but before that he needs to outlast a tough test in Canada's Vasek Pospisil in the quarterfinal round of the tournament.

Reaching his eighth consecutive quarter final was not an easy task for Murray, who had to face 6-foot-11 Croatian Ivo Karlovic, who is known for his aces, in the fourth round Monday.

But Murray, 28, was able to survive after more than three hours and captured the win 7-6 (9-7) 6-4 5-7 6-4.

Following the match, Murray praised his opponent. He said: "He [Karlovic] was playing [at an] unbelievable [level]. Passing shots, lobs, unbelievable. I don't know if he ever did it this good in that part of the game. I was also doing really well, tough, and in the end I was a little bit unlucky. But I'm confident if I continue like this I will have a great year."

Murray also talked about playing with a lingering right shoulder injury.

"I played for three hours today and it feels better than it did three, four days ago, which is positive. I'm still conscious of it and I'm playing with quite a lot of taping on the shoulder," Murray told The Telegraph.

He added: "I would have liked to have served a little bit bigger today, a little bit harder. That's something that, as I go on in the tournament, I'll need to try to do more of."

Meanwhile, Pospisil, Murray's quarter finals opponent defeated Serbia's Viktor Troicki in another lengthy match. After losing the first two sets, Pospisil, 25, found his rhythm and managed to be on top, winning 4-6, 6-7, 6-4, 6-3, 6-3.

So far the Canadian showed his outstanding endurance in the entire tournament, with three of his four matches needing five sets and the other needing four sets.

Murray holds three wins against Pospisil in all their previous matches, with the 2013 champion not losing a set in all those matchups.

The match will be first up at 1 p.m. on Wednesday and can be watched online through live stream by clicking here.