It was a hard and tough five-seater against 20-year-old American Brandon Nakashima, ranked 56, but in the end it was still no talk.
After three hours and 10 minutes, and an Australian overtaking in the decisive set, the victory numbers were written to 4-6, 6-4, 7-6 (7-2), 3-6, 6-2.
This is the second time Kyrgios has reached the quarter-finals at Wimbledon and the first since 2014.
- I am proud of my fighting effort.
There has been a lot of tennis in the last 1.5 months, tonight I need a glass of wine, says the Australian in the victory interview on the center court after admitting that the body, and especially one shoulder, was sore.
The quarter-final place is by far the best in the grand slam context.
He has also reached the quarterfinals of the Australian Open 2015.
Now the 40-ranked Australian has a dream position to reach even further.
In the quarterfinals awaits unseeded and 43-ranked Cristian Garin, Chile, who turned 0-2 defeat against Kyrgio's compatriot Alex de Minaur and won an islet of four hours and 34 minutes with 2-6, 5-7, 7-6 (7- 3), 6–4, 7–6 (8–6).
Kyrgios was completely focused on his tennis in Monday's match, unlike in the victory against Greek world five Stefanos Tsitsipas on Sunday.
Then he scolded the referee and demanded to get Tsitsipas washed after he hit a ball into the audience.
Afterwards, Tsitsipas called the Australian a "bully".