In a post-match interview after the 21-year-old was easily beaten by Andy Murray at Wimbledon he shockingly revealed that he prepared for the encounter by playing video games.
The 2013 champion eased to a 7-5 6-1 6-4 win over Kyrgios, who lost his focus in the second set and did not give his opponent the test that had been expected.
He saved two break points in the eighth game of the fourth set with aces, the second a 122 miles per hour second serve, before clinching victory after two hours and 42 minutes.
Kyrgios spoke about Murray in glowing terms on Sunday, joking it was "love at first sight" - although he surely would have wanted to wrap a racket around the Scot's neck here. But obviously there's a few things he needs to improve and get better at. "The sooner he does that, the better for him and his career", said Murray.
Murray said: "I thought I played well".
Although two of those came in straight sets, it is the form of the most recent meeting at a tennis Major - last year's US Open - that looks good here. Muttering to himself and slapping silly shots around with no real objective, he virtually handed the set to a grateful Murray, 6-1. "I know Tsonga is one of the best grass-court players in the world".
Kyrgios was furious at his entourage for not offering enough vocal support during his tight tussle on show court one and social media was quick to light up with criticism of his conduct. The reporter was referring to a warning issued to Kyrgios at the start of the third set by umpire Jake Garner.
"But I know it's a very long road to get better and get 100 per cent".
"I think it's an wonderful story, unbelievable what they're doing", he said.
"A lot of people in the locker room now believe they can win it".
"But it happens a lot where it doesn't seem like he's really done much in comparison to what other players are doing - and he's the one that gets asked all the questions about it".
I obviously like playing the game. I know what it takes to win these tournaments.
Asked if it was possible to learn to love tennis, Philippoussis said: "No".
Jo-Wilfried Tsonga awaits in the last eight. I've done a good job of it so far.
Kyrgios, the 15th seed, who was fined a total of $6,500 for outbursts during the tournament, did little to help his case in a moody press conference.
The Briton, another player prone to chatter away and berate himself and others during matches, is the favourite to take the title after Novak Djokovic's shock exit.
The third set continued in the same vein as Kyrgios made some more freakish decisions and even refused to take his seat at the change of ends.
"In a way you're the one that's funding it, paying it", Murray said.