A spokesperson for Repton Boxing Club in east London, where the Zambian-born athlete had previously trained, described him as a "powerful boxer" and "crowd pleaser" who always achieved an "all action humdinger of a bout" even in his amateur days.
The club said: "We are saddened to hear that Ex Repton Boxer Michael Norgrove has died nine days after collapsing in the ring at The Blackfriars Venue London, doing what he loved."
His promoter Steve Goodwin tweeted: "It's so unbelievable what has happened to this young man."
More top news
London motorists are hit disproportionately by parking tickets. Teenager Joshua Browder is making it easier for motorists to appeal.
A volunteer on her campaign said to a voter that rival Sadiq Khan was a "liability" because he is Muslim.
A food historian has claimed that pasties made in Cornwall were mainly vegetarian - and the term 'Cornish pasty' was coined in London.