WIMBLEDON, London -- Wimbledon is about to undo its top button, throw away its purple-and-green striped tie and reveal its wild side. Calvin Johnson Lions Jersey .Nick Kyrgios, probably the most emotionally volatile man in tennis, is due to have a second-round meeting on Friday with Dustin Brown, whose own coaching consultant describes his tennis as organised chaos.The All England Club has never known a match between two such unpredictable characters, and its hard to imagine how many tweeners, trick-shots and emotional outbursts it will produce.Its the so-called bad boy of the game versus Dreddy Tennis, and Kyrgios has been predicting a circus.One certainty is that the meeting between the Australian No.15 seed and the German-Jamaican, a wild card by entry and inclination, will bring a new audience to the sport. If ever there was an occasion to engage the millennials, then this is surely it.This one match could change the image of Wimbledon for some. Its going to be insanely exciting, its going to be fun, Browns coaching consultant, Australian Craig OShannessy, told ESPN.People will be going out of their way to watch this match. Globally, the excitement levels are so high. Its not just about the ball and the court -- there are personalities involved. This match is a real gem. It could end up being the gem of the tournament.OShannessy added: We know how Novak Djokovic plays and what he does, and were all impressed with him. But matches like these showcase the excitement and flair in tennis. Both [players] will be feeding off the electricity in the crowd.This match just happens to bring together two men who have defeated Rafael Nadal at Wimbledon. Kyrgios did so in 2014 and Brown last summer, but they have so much more going for them than past glories against the Majorcan, even if he is a former champion on these lawns.The prospect of these two characters colliding is fascinating. On one side of the net there is Kyrgios, still only 21 years old and already the owner of a list of run-ins with tennis officialdom longer than most players manage in an entire career.The latest of those altercations came in his opening-round match against Radek Stepanek of the Czech Republic when he was warned for swearing, a reprimand he called rubbish.On the other side, there will be a serve-and-volleying rastafarian who has dreadlocks half the length of his body, as well as a tongue piercing and a tattoo of his father over his rib cage.Then consider Browns back story, how for years he travelled from tournament to tournament in a Volkswagen camper-van.Kyrgios and Brown are friends. In fact, theyre so close that Brown has apparently allowed the Australian to touch his dreadlocks. There have also been times when Kyrgios has sat in front of his computer watching and re-watching one of Browns trick-shots.Dustins tennis is awesome. Im a massive fan of his tennis, Kyrgios said. He can pull out shots from anywhere.This will be their first match. And the warmth of their relationship will count for nothing, with Brown looking for ways to disturb Kyrgios equilibrium, possibly tipping him over the edge.Dustin is going to try to get Nick to hit the self-destruct button, said OShannessy, who works alongside Browns regular coach Scott Wittenberg,Hell have a plan for which things are going to upset Nick, mentally and emotionally, and which will take the edge away from Nicks A-game.If Dustin plays an awesome match of tennis, its going to be easier to