Errol Spence Jr returns to the ring tonight as the former world champion boxes Tim Tszyu after three years out of action.Spence, 36, has not fought since his seismic undisputed-title fight with Terence Crawford, a bout that was billed as a 50-50 clash, only for Crawford to drop his fellow American three times before stopping him. Spence, who was unbeaten before that fight, will move from welterweight up to middleweight against Tszyu, as they meet in the latters home country of Australia.Errol Spence Jr during his defeat by Terence Crawford in 2023 (Getty)Southpaw Spence and Tszyu, 31, were originally due to meet at a 158lb catchweight, before Spence reportedly asked for the limit to be increased. Heres all you need to know:When is the fight?The fight will take place on Sunday 26 July at the Afterpay Arena in Sydney Olympic Park, Australia. The card is due to begin at 2am BST on Sunday morning (6pm PT / 8pm CT / 9pm ET on Saturday).How can I watch it? The event will stream live exclusively on DAZN pay-per-view at a cost of 24.99. You do not need a DAZN subscription to secure the event, but it does come as part of their Ultimate plan (24.99 per month for 12 months, or 249.99 upfront).Odds Spence 8/11Tszyu 11/10Draw 14/1Via William Hill. Get all the latest boxing betting sites offers. The Independent vets betting sites for usability, security and responsible gambling tools. You can claim free bets here to use across a range of sports. Please read the terms.UndercardTim Tszyu is interviewed after beating Denis Nurja in April (Getty)Subject to change:Errol Spence Jr vs Tim Tszyu (middleweight)Stephen Fulton vs Liam Wilson (super-featherweight)Jermall Charlo vs Koen Mazoudier (super-middleweight)Paul Fleming vs Ahmad Reda (lightweight)Paulo Aokuso vs Luis Antonio Tejeda (light-heavyweight)Callum Peters vs Ivan Ricardo Actis (middleweight)Tina Rahimi vs Sacha Ryan Dryden (TBA)