Dramatic footage has been released of the moment Bath Rugby's new signing Gavin Henson is punched to the floor by team-mate Carl Fearns.
The players were on a night out at the Pig and Fiddle pub in the city on Wednesday night.
Bath Rugby has confirmed it is investigating the incident, which apparently left the 31-year-old out cold on the floor of the Broad Street pub.
Bath are Henson's fifth club in two years. The controversial Welshman is looking to revive a career that promised much in his youth.
Shortly after the announcement that Gavin Henson had been sacked by Cardiff, Flybe issued a statement saying that they had informed the player that he has been banned from using the airline for six months.
A company spokesperson said:
October 2005: Henson releases a book entitled 'My Grand Slam Year' chronicling Wales' RBS 6 Nations success and his experiences on the Lions tour of New Zealand. Comments about other players and life in the Wales camp mean he is forced to apologise in front of his team-mates.
December 19, 2005: Henson is initially banned for 10 weeks, reduced to seven weeks on appeal, after elbowing Leicester prop Alex Moreno.
December 10, 2007: Henson is charged with disorderly conduct over his behaviour on a train after helping Ospreys beat Harlequins. The case is later dropped.
April 18, 2011: Having left the Ospreys for Saracens and then Toulon, things appear to be looking up for Henson when he scores a try on his debut for the French club. But after his second appearance, he is involved in an altercation with team-mates in a nightclub and is suspended for a week.
Blues chief executive Richard Holland said in a club statement: "The Cardiff Blues management have discussed the matter at length but have acted swiftly since the incident occurred on Saturday morning.
"Gavin admitted himself that his behaviour was totally unacceptable and the immediate termination of his contract sends out a clear message that behaviour like that will not be tolerated at the Blues.
"We have a duty to our supporters and sponsors to protect the good name of Cardiff Blues and those associated with our brand.
"Gavin Henson is obviously a talented rugby player and it's unfortunate that his career at the Blues has ended this way."
Cardiff Blues have confirmed they have sacked Gavin Henson following his drunken behaviour on a flight back from Glasgow on Saturday morning.
Wales rugby star Gavin Henson has been suspended by his club, the Cardiff Blues, following an incident on a plane.
Henson joined Cardiff Blues in October last year.
The incident took place on a flight from Glasgow back to the Welsh capital last night.