The 26-year-old successfully defended his WBO title for the fifth time against Germany's Robin Krasniqi last night.
Enzo Maccarinelli stopped in bid to win commonwealth light-heavyweight title.
It was a silver medal for 21-year-old welterweight boxer Fred Evans from Newport on the final day of the Olympics.
Nathan Cleverly is targeting a rematch with bitter rival Tony Bellew... if he can get through his latest fight in Liverpool this evening. The 27 year old from Cefn Forest faces Argentinian Alejandro Emilio Valori at the Echo Arena later in his second outing at Cruiserweight.
If the Welshman and Bellew - who fights Julio Cesar Dos Santos on the same bill - should both win, it'll pave the way for what Cleverly has described as a "genuine grudge match" - maybe in November.
The Welsh fighter prevailed on points in the pervious meeting between the pair in 2011. But he lost his WBO Light Heavyweight Title to Sergey Kovalev last August. Since then, the University maths graduate has made the step up to Cruiserweight, seeing off Shawn Corbin within 2 rounds in May.
There were also victories for fellow Welsh boxers Lee Selby and Gavin Rees, alongside Nathan Cleverly in Cardiff last night.
Featherweight Selby, 27 and from Barry, beat Romulo Koasicha to state his case for a world title fight in the future.
Former WBA light-welterweight champion Gavin Rees, 34, beat Welsh compatriot Gary Buckland in his final fight.
Nathan Cleverly secured a comfortable victory on his debut at cruiserweight, in Cardiff last night.
The Welsh boxer forced a second-round stoppage against 39-year-old Shawn Corbin, from Trinidad and Tobago.
It was Cleverly's first fight since he lost his WBO light-heavyweight title to Sergey Kovalev last August.
The 27-year-old from Cefn Fforest spent nine months out of the ring, assessing his future and then switching weight divisions, trainer and promoter.
It took him only six minutes to dispatch Corbin at the Motorpoint Arena, landing an uppercut before peppering his opponent with shots, that meant the referee stepped in to end the fight.
Nathan Cleverly is preparing to make his cruiserweight debut in Cardiff tonight.
The 27-year-old has not fought since losing his WBO light-heavyweight title in a four-round defeat to Sergey Kovalev in August.
He'll take on 39-year-old Sean Corbin at the capital's Motorpoint Arena.
Nathan Cleverly will face Guyana-based Sean Corbin when he makes his debut at Cruiserweight next month.
The former light heavyweight champion makes his first return to the ring since losing his WBO crown to Russia's Sergey Kovalev last August in a change to his weight division that the Cefn Forrest fighter hopes will reignite his world title aspirations.
Guyana-based WBC Caribbean champion Corbin will offer a stern test for Cleveley's debut in his new division, bringing a record of 17 wins with 12 KOs to Cardiff on May 17th.
Promoter Eddie Hearn says he hopes the match-up will help the Welshman move on to bigger fights in the year ahead.
“I can't wait to see Nathan back in action at Cruiserweight,” said Hearn. “Corbin has only been beaten when he has stepped up to top level and will come into the fight with plenty of size and ambition. Nathan must win and look good doing so with so many huge fights just around the corner.”
An independent audit of the Welsh Amateur Boxing Association (WABA) says the organisation is "not fit for purpose" and auditors have "been unable to satisfy ourselves that there was no fraud."
The report was commissioned by the Welsh Government, Sport Wales and WABA, and carried out by accountants KTS Owens Thomas.
It said WABA, in its current state, "does not qualify to receive public money", and Sport Wales "must consider the implications of this finding."
In 2012, WABA - which controls amateur boxing in Wales - received £190,000 in Sport Wales grants, as part of its £237,000 total revenue.
The report said "We have not found evidence of fraud, but have been unable to satisfy ourselves that there was no fraud. This is the result of the absence of sufficient financial records."
"There are few checks, limited evidence of authorisation of expenditure, no external examination of the financial activities or controls and an absence of much supporting documentation."
The Welsh Amateur Boxing Association says it accepts "the wider recommendations and appreciates that improvements can be made."
"We are working closely with Sport Wales to address the recommendations in the report, and have an agreed 12 month action plan. Progress has already begun in addressing the recommendations."
Hundreds of fans came to see Wales' Nathan Cleverly training on the streets of Cardiff today. The WBO Light-heavyweight World Champion is getting ready to defend his title in the capital in two weeks' time. Tom Sheldrick reports.
The 26-year-old takes on Sergey Kovalev at the Motorpoint Arena on 17th August and showed off his sparring skills for fans in Queen Street.
Former WBO cruiserweight world champion Enzo Maccarinelli says he hopes to put a horrendous 2012 behind him by claiming the Commonwealth light-heavyweight title next month.
Swansea fighter Maccarinelli will face a rematch with Ovill McKenzie after he was controversially stopped during their last fight. They'll square up on the undercard of Nathan Cleverly's world title defence on August 17th in Cardiff.