Rafael Nadal and Nick Kyrgios don't get along. That's why their second-round match at Wimbledon is going to be must-watch tennis.
It's the grudge match of the year. The whole tennis world has been licking its lips for this showdown, anticipating another blockbuster — just like they delivered in their previous meeting at the Mexican Open this year.
Everyone is locked in for the encounter — except Kyrgios.
The Aussie star was spotted by multiple tennis commentators at a pub next to the All England Club past 11pm (London time) the night before his highly anticipated second-round match, scheduled on Centre Court for the early hours of Friday morning (AEST).
The significance of Kyrgios' choice of pub has also not been lost on tennis commentators.
Just 24 hours after he admitted he and Nadal do not get on well enough to "go down to the Dog & Fox and have a beer together," Kyrgios was spotted at the same venue with a drink in hand.
Even for Kyrgios, who has made a habit of playing video games to 3am the night before some of his biggest matches, this is a less than ideal preparation for a match against one of the greatest players tennis has ever seen.
His antics were both slammed as disrespectful to the sport and celebrated as a "legendary" moment of lovable, larrikin behaviour.
The story erupted on social media when Eurosport TV commentator Miguel Seabra first noted Kyrgios was at the famous watering hole at 9.30pm (local time) and claimed to have "toasted" drinks with him.
Multiple claims then followed from other tennis fans and personalities claiming Kyrgios was still out past 11pm, before AAP journalist Darren Walton reported a source told him the Aussie was home before midnight.
Kyrgios' approach to one of the biggest grudge matches of the year has just added another layer of spice to what was already going to be compulsory viewing across the tennis world.
Nadal sensationally accused his rival of being disrespectful when they last clashed at the end of February.
The Aussie responded by labelling him "super salty" and also hit out at his uncle Toni, claiming the star's former coach started the bad blood between the two camps.
Nadal's legendary work ethic and humility put him at odds with Kyrgios' brash showmanship and "I won't apologise for anything" mentality, which probably explains why the Canberra product said yesterday the pair aren't likely to have a beer together any time soon.
"I get along with people, some people I don't get along with," Kyrgios said. "I mean, we have a mutual respect, but that's about it I think."
After a straight sets win over Yuichi Sugita at the All England Club, Nadal was quizzed about what he's expecting against Kyrgios in round two.
"My thoughts are very clear, no? I play against a top talent player, very dangerous player when he wants to play tennis," Nadal said.
"Normally against the best players, he wants to play tennis. When that happens, he's a very dangerous opponent.
"Of course, second round is a super tough one. I know that. I need to be at 100 per cent. I am going to fight for it."
The Spaniard is dead right. Kyrgios is a very dangerous player — when he wants to be. When he doesn't, he often beats himself.
But Nadal won't be getting any help from the other side of the net on Thursday. While a disinterested Kyrgios can be easy fodder for lesser ranked players, he always tunes in against the big guns.
Against Nadal, his head-to-head record is 3-3, as it is with three-time grand slam champion Stan Wawrinka. Against Novak Djokovic, Kyrgios is 2-0 and against Roger Federer he's won once in six attempts.
It's an enviable record against tennis's top dogs and one few of Kyrgios's peers – especially his age (24) – can boast about.
"It's just me, bro," Kyrgios said when asked why his record against the world's best is so strong. "I don't know what to say. I just love playing them.
"I can't wait (to play Nadal). As soon as the draw came out, I was super happy that I saw him in my section. I mean, it's more exciting.
"When you're a kid, you want to play the best players in the world on what I think is the best court in the world. This is something that I can't take for granted. There's no guarantee I'm going to be here again in this position. Could have an injury or something like that.
"Going into the match, he's one of the greatest tennis players of all time. I go into that match as an unbelievable underdog. I know if I play the right type of tennis, I can have success against him.
"I have to come with the right attitude, I have to be willing to fight. If not, it's going to be butter for him. He's one of the best tennis players."
Kyrgios may have dropped the fourth set against fellow Aussie Jordan Thompson 0-6 in just 18 minutes in his Wimbledon opener, but he still showed plenty of fight to prevail in a five-set thriller against the in-form grass courter, who sits just one spot below his countryman in the world rankings.
Like Nadal suggested, when he wants to, Kyrgios can mix breathtaking talent with mental fortitude. It's just not a combination seen often enough for some people's liking.
Nadal is ranked No. 2 in the world while Kyrgios is unseeded at Wimbledon, so the Spaniard is the favourite to advance to the third round. But whatever the result, the post-match handshake at the net will be worth hanging around for.