Australian Open: Berdych and Kyrgios fancy their q-final chances against Nadal, Murray

Tomas Berdych of the Czech Republic celebrates his victory over Bernard Tomic of Australia in their men's singles match at the Australian Open in Melbourne on Jan 25, 2015. Berdych will be facing Rafael Nadal next, but though the Spaniard has an
Tomas Berdych of the Czech Republic celebrates his victory over Bernard Tomic of Australia in their men's singles match at the Australian Open in Melbourne on Jan 25, 2015. Berdych will be facing Rafael Nadal next, but though the Spaniard has an 18-3 record over Berdych, the Czech is not letting that statistic intimidate him. -- PHOTO: AFP

MELBOURNE (AFP) - Rafael Nadal is looking to extend his superiority over Tomas Berdych while Andy Murray plans to break local hearts again against exciting teenager Nick Kyrgios in Tuesday's Australian Open men's quarter-finals.

Nadal, a 14-time Grand Slam champion, has an imposing 18-3 record over seventh-seeded Czech Berdych as he chases his second Australian Open crown.

Berdych, under new coach Dani Vallverdu, is treating it as a fresh slate after serving his way into the last eight without dropping a set.

Said Berdych, a semi-finalist last year: "It's going to start from 0-0. No comparing with the past. Just trying to be in this time and looking forward to it."

Nadal is respectful of his opponent even though he has won their last 17 matches.

"It doesn't matter what happened in the past, it's a different story this time. Different moment for me, different moment for him," he said.

"He's a great player. I have had success against him but I have had chances to lose against him."

Murray, a two-time Grand Slam champion but luckless in Melbourne in three losing finals, will have the crowd against him when he takes on 19-year-old Kyrgios.

"Obviously, the crowd will be right behind him. Understandably so. They're probably going to watch him play a lot of matches like this over the next 10, 15 years," said Murray.

"That's just something that I'll have to deal with in my way. I've played in French Open against French players where the crowd can be very difficult."

Confidence is in no short supply with Kyrgios, who is playing in his second Grand Slam quarter-final after beating Nadal and Richard Gasquet before he went out to Milos Raonic at last year's Wimbledon.

"I definitely believe that I can do it," he said of his chances of becoming the first Australian to win his home Grand Slam since Mark Edmondson in 1976.