Sheffield's Adam Etches lost his IBF Middleweight title to a fourth round knockout from Belorussian Sergey Khomitsky.
Fighting at Sheffield's Motorpoint arena on the undercard for Kell Brook and Jo Jo Dan, the 24-year-old local, etches struggled against the veteran Khomitsky, despite a partisan home crowd.
Doncaster's Gavin McDonnell has won the vacant EBU super-bantamweight title, beating Ukranian Oleksander Yegorov on a points decision.
The 28-year-old from Doncaster started the bout strongly, before a late comeback by the previously undefeated Yegorov taking the verdict by the verdict by 117-11, 118-110 and 118-109 margins.
McDonnell's fight came five years to the day from when twin brother, Jamie won his EBU Bantamweight title, a night that would spur Gavin on to become a champion too.
Kell Brook is determined to complete his remarkable journey from "game over" to home city glory when he puts his IBF welterweight title on the line for the first time in Sheffield on Saturday night.
The 28-year-old will take to the ring against Romanian Jo Jo Dan less than six months after an horrific machete attack in Tenerife which left him fighting for his life with blood pouring from a 12-inch wound.
And having fought his way up through the city's sports halls and leisure centres to finally top the bill in front of an expected crowd of more than 10,000, Brook admitted his biggest battle might be to stop his emotions getting the better of him.
Brook took the title from previous holder Shawn Porter in California in August and knows victory over Dan could pave the way to much more lucrative bouts in the 147lbs division.
While his stated aim of sealing a showdown with the winner of the May super-fight between Floyd Mayweather and Manny Pacquiao may be over-ambitious, plenty of other potential money-spinning bouts remain.
And while Brook is right not to under-estimate his Canada-based opponent, it is hard to see how the 33-year-old Dan is likely to pose much of a threat.
His record is a solid enough 34-2 with 18 stoppage wins, but his two losses came on his only two previous forays anywhere near top class, both against Turkish opponent Selcuk Aydin in 2010 and 2011.
John Shires reports on tomorrow's big fight.
Kell Brook has vowed not to make the same mistake as the man from whom he ripped the world crown when he makes the first defence of his IBF welterweight title in Sheffield on Saturday night.
Brook faces mandatory challenger Jo Jo Dan at Sheffield Arena and insists he has no plans to let go of the title he worked so hard to win:
Jo Jo Dan has told Kell Brook that his reign as IBF World Welterweight title will end on March 28 at the Motorpoint Arena in Sheffield .
Mandatory number one challenger Dan travels to the Steel City as Brook’s first opponent for the belt he won in style in California against Shawn Porter in August.
Brook is looking to land a major fight in the summer as he looks to stamp his authority on the lucrative 147lb division – but the 31 year old Canada-based Romanian has other ideas.
Dan’s clash with Brook is part of a huge night of boxing in Sheffield as local favourite Adam Etches defends his IBF International Middleweight title against Sergey Khomitsky and Gavin McDonnell continues his fairy tale story challenging Ukrainian Oleksander Yegorov for the vacant European Super Bantamweight title.
Boxing promoter Eddie Hearn has urged Amir Khan to swallow his pride and fight Sheffield's world welterweight champion Kell Brook this summer.
Khan, a former world champion, is said to be waiting to take on the winner of the showdown between Floyd Mayweather and Manny Pacquiao.
However, Hearn insists a fight against Brook would be the better option.
Boxer Amir Khan has said he won't fight Sheffield world champion Kell Brook any time soon.
There was talks of a potential super fight at Wembley stadium between the two but Khan says that Brook is not worthy of a fight with him at the moment.
Despite being IBF World Champion, the olympic medalist does not believe that unbeaten Brook is a big enough name in the world of boxing.
A boxing superstar has been to visit our region today.
Olympic medalist and former welterweight world champion Amir Khan was helping to serve up food for Leeds charity the St George's Crypt, which works with the homeless, the vulnerable and those suffering from addiction.
Khan, who has family in Yorkshire, spoke to our reporter Ben Turner:
Sheffield boxer Kell Brook is giving his fans the chance to share in his IBF Welterweight title glory at the Winter Gardens today. He's hosting a press conference a lunchtime and members of the public are welcome.
Sheffield boxer, Kell Brook, will be feeling the pressure as he faces up to the hard punching Mexican, Alvaro Robles, at Liverpool's Echo Arena.
Earlier in the week it was confirmed that - at long last - the unbeaten welterweight will get his shot at a world title.
But his dreams could still be shattered if he doesn't get past the man from South America.
John Shires went to check out his preparations: