Andy Ruiz Jr ends a two-year layoff to lock horns with Damian Knyba this autumn. Ruiz Jr has only boxed four times in the 7 years since his stunning upset win over Anthony Joshua in New York.Ruiz Jr has been out of action for a little over two yearsGettyThat famous night, in June 2019, Ruiz Jr claimed the unified WBA, WBO and IBF heavyweight titles, but he dropped all three belts six months later in a rematch.Ruiz Jr came into the sequel out of shape and was made to pay for it.It was a similar story in his last outing against Jarrell Miller, which he was lucky to escape a draw with.Ruiz Jr has since reunited with long-time trainer Manny Robles, and appears to be in significantly better shape, both physically and mentally.The 36-year-old has set his sights on becoming a two-time heavyweight world champion, but he will have to get through towering 6ft 7in Pole Knyba first.Ruiz Jr vs Knyba: Date and venueRuiz Jr and Knyba are set to square off on Friday, September 4 at the Prudential Center in Newark, New Jersey over 12 rounds. Ruiz Jr vs Knyba: Start time and where to watchAll of the action is being streamed worldwide on DAZN, with US viewers also able to watch the fight on TNT Sports US.The card gets underway at 8pm EST (1am in the early hours of Sunday morning for UK fans).Ruiz Jr and Knyba are expected to make their ring walks at around 11pm EST (4am BST).talkSPORT.com will have extensive coverage of the event, while any reaction will be picked up on air.Tune in to talkSPORT through the website via the live stream or find us on DAB digital radio through your smart speaker and on 1089 or 1053 AM.Knyba stands 6ft 7in tall and boasts a monstrous 86in reachGettyDownload and listen to all our live commentaries via the talkSPORT app.Visit talkSPORT BET for all the latest odds and bet boosts for every big event.Subscribe to our talkSPORT YouTube channel for news, views and analysis plus our regular goals show and for more, follow us on talkSPORT Facebook and talkSPORT X.Ruiz Jr vs Knyba: UndercardAndy Ruiz Jr vs Damian Knyba – HeavyweightAustin ‘Ammo’ Williams vs Vito Mielnicki Jr – Middleweight Alan Chaves vs TBC – Lightweight Zaquin Moses vs TBC – Super featherweight Ruiz Jr vs Knyba: What has been said? Ruiz Jr said: “After we get this victory, I would love to fight all the guys that have the belts Oleksandr Usyk vacated. “We’re going to become a two-time champion next year.”Knyba added: “I can’t wait to be back at the Prudential Center, my second home.“I’m excited to be back in the ring in front of the New Jersey and New York fans, and they will fill the seats with white and red.”Watch Boxing on DAZN*If you click a link in this boxout, we will earn affiliate revenueSign up to DAZN to access the definitive subscription for boxing fans.Upgrade to DAZN Ultimate from just £24.99/month, guaranteeing access to 185+ fights annually, a minimum of 12 pay-per-views at no extra cost, as well as every Lega Serie A match and other elite football access.Alternatively, DAZN Standard is just £15.99/month, with the caveat you will have to pay for pay-per-view events.Click here to sign up.