He's the chubby kid from Canberra who has rocketed to international fame overnight, but Nick Kyrgios' family is still coming to grips with his rise to stardom.
Kyrgios' dream Wimbledon run continued in the early hours of Wednesday morning, when he became the first teenager to beat a world number one player at a Grand Slam tournament since 2005.
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Nick Kyrgios: 'It hasn't sunk in'
Nineteen-year-old Australian tennis player Nick Kyrgios upsets world number one Rafael Nadal in four sets to reach the quarter finals at Wimbledon.
Kyrgios, 19, beat Rafael Nadal 7-6 (7-5), 5-7, 7-6 (7-5), 6-3 in a stunning upset in his first match on Wimbledon's centre court - the biggest stage in world tennis.
He did however lose in the quarter finals to Canadian Milos Raonic on Thursday morning.
His family home in Watson erupted with excitement as he toppled Nadal and mum Nill and brother Christos' phones have been running hot since the end of the match.
Television networks have been offering money for exclusive access to the humble family home ahead of the clash with Raonic.
The family has been inundated with support from relatives, friends and anyone they come in contact with.
It marks an amazing rise from when Kyrgios was a chubby kid playing in Canberra, to a junior star travelling with Christos to the next big thing in world tennis.
"[The hype] isn't surprising, it's a bit annoying with the phone ringing all the time. He's just beaten the world No. 1 so it's not surprising," Christos said.
"Everyone talks about it being a rockstar life, but if you're not in the top 100 you're not making very much coin. It's a bit of a struggle.
"I'm definitely excited, it's awesome. It's ridiculous that he made that transformation.
"It's really good to see it actually happen, everything he has worked for come to fruition.
"He was a big kid, but when he started watching what he was eating and concentrating on training, when he decided it was something he needed to do to get to where he wanted, that's when he changed."
Kyrgios will pocket almost $A410,000 for his efforts even if he loses his quarter final, doubling his career earnings in one tournament.
Kyrgios' mum Nill broke her game-day tradition for the clash against Nadal.
In previous contests, Nill has busied herself with housework and locked herself in her room because she was too nervous to watch.
But with her son up against the world's best, Nill put on a brave face and watched. Christos doesn't expect to sleep for two days as he helps his mum with increased media attention and the excitement of being in the Wimbledon quarter finals.
Dad George has been wearing the same Akubra hat and shirt while sitting in the stands alongside Kyrgios' sister Hali.
It was only 18 months ago that Kyrgios was ranked No. 838 in the world.
But after playing at the Australian Open and his rise at Wimbledon, the teenager is guaranteed a place in the top 100 which earns him a start at every grand slam tournament.
Kyrgios is also set to get a financial boost from sponsors.
BY THE NUMBERS
3 - Kyrgios is only the third Australian to beat Nadal, after Chris Guccione and Lleyton Hewitt
19 - He is the youngest player to reach the last eight since fellow Australian Bernard Tomic in 2011
37 - Kyrgios smashed 37 aces beyond Nadal, increasing his tournament tally to 113
133 - His fastest serve registered at 133mph (214km/h)
144 - The Australian is the lowest-ranked player Nadal has ever lost to at a grand slam
1990 - He is the first player born in the 1990s to beat Rafa Nadal2004 - Kyrgios is the first man to reach the quarter finals on his Wimbledon debut since German Florian Mayer in 2004
2005 - He is the first teenager to beat a world No. 1 at a grand slam since Nadal beat Federer at the 2005 French Open