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. AdvertisementAdvertisement AdvertisementSpence, who was unbeaten before that fight, will move from welterweight up to middleweight against Tszyu, as they meet in the latter's 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. 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)