Olympic boxer Fred Evans from Cardiff has admitted assaulting a reveller at a lap-dancing club after a row over cult reality TV show The Valleys.
Evans, who won a silver medal in London in 2012, was fined £435 for his "limited" role in the assault.
Birmingham Magistrates' Court heard the boxer from St Mellons teamed up with a friend, Danny Butler, to launch a "gratuitous and unprovoked" attack which left their victim unconscious.
The court was told their victim was was battered around the head and knocked to the floor on February 23 this year, moments after arguing with Butler about the merits of MTV's The Valleys.
Butler, of Gloucester Road, Corse, Gloucestershire, was jailed for 10 weeks for his part in the attack, and also ordered to serve four weeks of a previous suspended sentence imposed for a similar offence.
Both Evans and Butler, aged 20, had pleaded not guilty at a previous hearing but admitted common assault after viewing CCTV footage of the attack prior to today's proceedings.
Gavin Rofer, defending Evans, said the boxer was deeply remorseful and had consumed "quite a lot of alcohol" at the time.
Fred Evans brought the curtain down on a great night for Welsh boxing at the inaugural World Series of Boxing Event at the Celtic Manor.
Newport fighter Evans was welcomed to the ring by an expectant crowd and gave them exactly what they had come to see as he got the better of a split decision against French National Champion Michel Tavares.
Evans' win helped Great Britian Lionhearts to run out 4-1 victors over reigning competition champions Italia Thunder with the series now moving onto London's Earls Court on 14th of December.
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Boxer Fred Evans has beaten world number one Taras Shelestyuk to book his place in the welterweight final at the London Olympics.
The Welshman won by eleven points to ten in tonight's semi-final. He'll fight for a gold medal at the Excel Centre on Sunday.