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Joseph Parker is on the brink of securing another world title shot on Saturday night if he can triumph over hard-hitting Brit, Fabio Wardley. Parker held the heavyweight champion title in 2016 but was defeated by Anthony Joshua two years later. His comeback plan was then scuppered by Dillian Why te before his next attempt at a world title was stopped in its tracks by Joe Joyce. Since then, Parker has revamped his training regime and has notched up victories over Deontay Wilder , Zhilei Zhang and Martin Bakole. The only obstacle standing between him and a shot at undisputed king Oleksandr Usyk is Wardley, who has emerged from obscurity to be the best bet among the British heavyweight contingent for a face-off with Ukrainian Usyk, who will be observing from ringside at the O2 Arena. Here's everything you need to know about Saturday's bouts.... Joseph Parker and Fabio Wardley will square off on Saturday evening at the O2 Arena in London. The main card is expected to kick off around 7pm BST (2pm ET / 11am PT / 1pm CT). For the headline clash, it's likely that Wardley will make his ring walk first at 10pm BST (5pm ET / 2pm PT / 4pm CT), with Parker anticipated to follow immediately after. The two stars will then touch gloves just after 10:20pm BST before the first bell rings. The main event time could shift depending on how long the undercard fights take to finish, reports the Mirror . The entire event will be aired live on DAZN, with a price tag of £24.99. This popular streaming service can be added as an extra subscription on your telly. It's also available for live streaming via the official website or through the downloadable app. A DAZN membership will set you back £119.99 annually or £14.99 monthly, alternatively, you can opt for a flexible arrangement at £24.99 that allows cancellation at any time. Joseph Parker vs Fabio Wardley Juergen Uldedaj vs Rolly Lambert Fogoum Ezra Taylor vs Steed Woodall Mitchell Smith vs Arnie Dawson Danny Quartermaine vs Royston Barney-Smith Tony Curtis vs Lakshmy Zaragoza Contreras Zayn Ahmed vs Engel Gomez Jimmydean Wood vs Artjom Spatar George Crotty vs Bahadur Karami Anton Esson vs Jordan Ellison Hassan Ishaq vs Jake Pollard. Joseph Parker: "With the white-collar background, not going through the same route that other fighters have been through like being an amateur and going around the world, so to do what he's done, it is quite amazing, but I don't think we should be touching on it any more. He's actually done really good in the professional game and now look where he's at. I know he had that background as a white-collar fighter, but now he has a lot more experience under his belt and he is in this position because he works hard, backs himself and believes in himself." Fabio Wardley: "For me there will always be something to prove. The initial story for me was, 'Oh he's white-collar, he's going to come unstuck at some point. He'll step up the levels and someone will beat him.' There is always a but on the end of why I got the win. I feel like there is always going to be something to prove. I don't mind that, it's something I enjoy to be honest. I keep surpassing expectations then listening to the new things people have to come up with!".