​Kristian Prenga (right) is unbeaten since suffering the only defeat of his professional career in February 2017 [Getty Images]Anthony Joshua returns to the ring against Kristian Prenga on Saturday in a warm-up bout for his planned super-fight with fellow British heavyweight Tyson Fury.Joshua, 36, last fought in December when he beat Jake Paul with a devastating sixth-round knockout in Miami.Albania’s Prenga, 35, carries knockout power but has never established himself as a world level contender in the heavyweight division.Will Joshua get the win required to keep alive hopes of the fight with Fury? Or can Prenga pull off a major upset?Here is all you need to know about the bout in Jeddah, Saudi Arabia.How to follow Joshua v Prenga on the BBCRadio commentary from Jeddah will begin from about 20:30 BST on BBC Radio 5 Live, BBC Sounds, and the BBC Sport website and app, on Saturday, 25 July.Coverage will be presented from ringside by Jonathan Overend, alongside two-weight world champion Natasha Jonas and boxing expert Steve Bunce.Live text commentary will begin at 20:00 BST on the BBC Sport website and app.Briton Hamzah Sheeraz makes the first defence of his WBO super-middleweight title against Germany’s Simon Zachenhuber in the co-main event.Fellow Briton Josh Kelly also defends his IBF light-middleweight belt against Ireland’s Caoimhin Agyarko.We will bring you round-by-round updates for both world title fights and the headline act of Joshua v Prenga.You can also follow the action through fight week on BBC Sport via the 5 Live Boxing podcast with daily episodes.What time are the ringwalks for Joshua v Prenga?Joshua and Prenga are not expected to make their walk to the ring before 23:00 BST.Joshua v Prenga undercard & running orderAnthony Joshua v Kristian Prenga – heavyweight Hamzah Sheeraz (c) v Simon Zachenhuber – WBO super-middleweight titleJosh Kelly (c) v Caoimhin Agyarko – IBF light-middleweight world titleReito Tsutsumi v Alvino Herrera – super-featherweightJacob Bank v Pawel August – super-middleweightHow do Joshua and Prenga’s records compare?Joshua is just shy of three months older than Prenga, but their careers have followed very different paths.After winning gold at the 2012 Olympics, Joshua turned professional the following year and went on to become a two-time heavyweight world champion.Joshua won each of his first 16 fights inside the distance in a run that culminated in him beating Charles Martin to claim the IBF title.His crowning moment came in 2017 when he stopped Wladimir Klitschko in the 11th round at Wembley to unify titles – adding the WBA belt to his collection.In 2018, Joshua outpointed Joseph Parker – winning by unanimous decision – to claim the WBO title.Joshua tasted defeat for the first time against American Andy Ruiz Jr in 2019 but earned revenge to reclaim the titles in a rematch.He was beaten in successive fights by Oleksandr Usyk in 2021 and 2022, before embarking on a four-fight winning streak to earn the chanc