Tony Harrison scored a fourth-round knockout win over Brian Chaves, before calling for a fight with former unified welterweight world champion Errol Spence Jr.

Harrison (31-4-1, 22 KOs) was far more convincing than his 10-round decision win over Edward Ulloa Diaz in July on his debut under Salita Promotions, curling hooks and digging downstairs against the Argentine at Detroit's Fox Theatre.

Post-fight, the former WBC 154-pound champion told Paulie Malignaggi: "I know when somebody has got the itch, wants to come back to the sport, I've been seeing him pop out with more interviews, come out to fights, I wanna fight people in my generation.

"The younger guys don't please me unless the money is there. I think a fight with Errol Spence will please everybody, I think champion vs-champion, skill-vs-skill, toughness-vs-toughness, he can see that I aain't running, I'm there to be hit so if you think you're the man, I love you but ... let's give the fans what they want to see."

Spence (28-1, 22 KOs) hasn't boxed since his damaging ninth-round stoppage loss by recently-retired multi-weight world champion Terence Crawford in July 2023, though has said he would return when he was ready after spending extended time off with his family.

Chaves was down multiple times and an end was called by referee Ansel Stewart with a second left of round four in their co-featured bout preceding Kaye Scott-Olivia Curry II for the WBA and WBC middleweight world titles.

Australia's Scott was a majority decision winner (98-92, 97-93, 95-95) in a contest lacking the same enthralling drama as their September 19 meeting, which ended a majority draw.

Scott started well behind her jab, punching first and landing often enough to bank an early lead, while Curry's pressure was nullified by the 41-year-old's ability to box in close and stifle that style.

Although Curry had her moments, it wasn't enough and Scott is now a unified world titleholder in a 160-pound division where MVP-backed pair Tammara Thibeault and IBF/WBO beltholder Desley Robinson will be interested parties for 2026.