Kyrgios, who played mixed doubles with Bouchard a few years back, stayed ready to bite back at any slight despite setting up a third-round match with Roger Federer with a 4-6 7-6 6-3 6-0 win that created headlines because of the intervention of Swedish official Mohamed Lahyani.
For nearly a minute the animated Lahyani gestured and pleaded with the stone-faced Kyrgios and the Swedish umpire could be heard telling him: "'I'm trying to help you".
Kyrgios said: "I'm not sure it was encouragement. I want to help you", Lahyani said. He added: "Nick, I know this is not you". "Sorry to say but he really should resign his position immediately", said the Australian. "I want to help you", Lahyani said.
Kyrgios was trailing his opponent, Pierre-Hugues Herbert, by a set and a break when Mohamed Lahyani stepped down from the chair and stood in front of him in the manner of a coach making an on-court visit.
"I don't know yet if it would have changed something". It was not just about how you're feeling, 'Oh, I am not feeling well.' He was down there for too long. "I had the plan to go to Dubai first, where it's extremely hot".More news: Rockets, Suns swap bad contracts in four-player trade
For a 23-year-old who has been cast as one of the most unpredictable athletes in the world, there's one thing you can count on: Kyrgios brings the drama. "I got pissed off", said 2011 and 2015 champion Djokovic.
Today, the 14th seed faces off against Serbia's Aleksandra Krunic, who's into the third round here for the second consecutive year.
Kyrgios said not much happened other than the umpire saying what he was doing was bad.
If Lahyani gets in trouble for his actions on Thursday, maybe he should consider moving from the umpire chair to Kyrgios' coach's box.
"Didn't know umpires were allowed to give pep talks", Vekic wrote.More news: Son's South Korea in football final after Vietnam win
Federer was crisp in a 7-5, 6-4, 6-4 win over Benoit Paire in and made it 18 of 18 lifetime in the second round of the US Open. Kyrgios dropped only one point on his serve in the last set while his groundstrokes wreaked havoc on Herbert, who was broken in each of his three service games.
Chris Widmaier, a USTA spokesman, told the Associated Press on Friday that Lehyani's chat with Kyrgios went "beyond our protocol", but the umpire wasn't going to be sanctioned. I mean, the umpire in Shanghai didn't cop any backlash. "His performance will continue to be evaluated, as will that of all chair umpires throughout the course of the US Open".
However on this occasion the chair umpire, Mohamed Lahyani, took it upon himself to intervene at the change of ends.
"On the other hand after seeing the video I am angry with the umpire". He started playing some shots that we all know he can make.
"I think Nick today could be an wonderful player".
He then tweeted: "I shouldn't have tweeted so quickly after the match".More news: Pakistan Government Celebrates Geert Wilders Mohammed Cartoon Contest Cancellation