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Kyrgios: Win silences mother

Nick Kyrgios vowed to text his naysayer mum a cheeky 'I told you so' message after dumping world number one Rafael Nadal out of Wimbledon.

The 19-year-old Australian romped past the second seed and two-time champion to set up a quarter-final clash with Milos Raonic, then revealed mother Norlaila had predicted a Nadal victory.

Kyrgios said he would text message his mother in Canberra, buoyed by seven-time grand slam winner John McEnroe backing him to swipe this year's Wimbledon crown.

"Last night I was reading a comment that she thought Rafa was too good for me," said Kyrgios, after his 7-6 (7/5) 5-7 7-6 (7/5) 6-3 victory on Tuesday.

"It actually made me a bit angry; you would think he's in a whole 'nother level compared to me.

"I just believed in myself that I could create some opportunities and I took them under pressure.

"I haven't spoken to her yet, but I'll just text her a smiley face."

Wild-card entrant Kyrgios arrived at Wimbledon ranked 144th in the world, and will now leave having reached at least number 65.

He is the first player ranked outside the top 100 to defeat a world number one at a grand slam since Andrei Olhovskiy saw off Jim Courier at Wimbledon in 1992.

The ebullient showman, who was ranked 838th in the world at the start of 2013, was neither overawed by Nadal nor overwhelmed by Centre Court, firing 37 aces.

Playing down McEnroe's backing for the All England Club title after reaching the last eight of a grand slam for the first time, Kyrgios said: "I'm just going to stay grounded.

"I'm just going to go home tonight and do everything possible for my next round tomorrow.

"Milos has probably got the best serve in the world. I'm just going to go out there and have fun again."

McEnroe, speaking on the BBC after the match, said that Kyrgios was "acting to me like he can win this tournament".

Kyrgios revealed he nearly flew back to Australia after losing a challenger match against John Patrick Smith in Nottingham three weeks ago.

The relieved teenager admitted he made the right decision to plug away at the rest of England's grass-court season.

"That's the biggest win of my career obviously, and something I'm never going to forget," he said.

"I'll draw so much confidence out of that no matter where I play now.

"I think I've achieved a lot this week, it's definitely been the best week of my life.

"It's just extraordinary: I'd never think after that match I'd be in the quarters of Wimbledon three weeks later.

"I was actually thinking about flying home after that match, but I just stayed strong and kept working hard.

"It just shows good things will come."

Kyrgios produced the shot of the tournament so far by flicking a baseline winner from between his legs, and later pledged to stick to his no-fear crowd-pleasing style.

Even if Kyrgios' fruitful week has come as a shock, the confident Australian has set himself the ultimate career goal.

"I definitely had nothing to lose out there, my first Wimbledon, making the fourth round," he said.

"I think I'll always have that aggressive style, serving aggressively and trying to take control from the baseline.

"That's how I've got to play to play my best tennis.

"I am going to have to play free, and back myself under pressure.

"I want to be the number one player in the world, that's my motivation.

"I've never had anything like this happen in my life, I'm just trying to work out where I'm going to go for me really."

Expecting a fiery quarter-final with eighth seed and fellow bullet server Raonic, Kyrgios said: "It's going to be hard to find rhythm.

"There's going to be a lot of walking from side to side from his serve, and there's going to be a lot of winners in the match.

"I'm just going to go out there and just go for my return of serve."