JOHN FURY punched and HEADBUTTED a glass wall in a bid to get to KSI.<br /><br />KSI and John's son Tommy put bragging rights, reputations, and unbeaten records on the line Saturday night in Manchester.<br /><br />To prevent tensions from boiling over between the two, a cage featuring a perspex glass wall was put between the pair to separate them.<br /><br />And after some words were exchanged Tommy exited and dad John entered to give KSI a piece of his mind.<br /><br />John proceeded to give the barrier a one-two combination.<br /><br />He also went as far as HEADBUTTING the glass that separated the two fighters.<br /><br />John failed to break through, with KSI holding his ground.<br /><br />Those in the audience could be heard shouting "Break the cage".<br /><br />John was eventually ushered out by security.<br /><br />Tensions also boiled over during Wednesday's open training session when John threw a bottle at KSI, prompting the YouTuber and rapper to SPIT at him.<br /><br />Among the chaos, a furious KSI appeared to ask: "Are you f***ing disrespecting me?"<br /><br />The enraged father of Tommy then repeatedly yelled: "Come down here!"<br /><br />He then added: "F*** off."<br /><br />KSI quickly turned his attention back to Tommy, who wagged his finger at his rival.<br /><br />John then launched an attack on Jake and Logan Paul's dad, Greg.<br /><br />In footage captured by DAZN, Fury could be seen exchanging fierce words with Paul behind the scenes.<br /><br />He was then held back as he tried to charge at the American, who was led away.<br /><br />Tommy Fury takes on KSI in a huge Misfits boxing event on Saturday.<br /><br />YouTuber Logan Paul takes on MMA star Dillon Danis on the night.<br />
