THe Kinahan crime family drowned their sorrows after boxer pal Matthew Macklin was beaten in a gruelling boxing match in Dublin over the weekend.
Macklin lost out to Jorge Sebastian Heiland at the 3Arena in a physical bout that could signal the end of his career.
Daniel and Christy Kinahan Jr flew into Dublin from their base in Costa del Sol in Spain to cheer on boxer Macklin on Saturday.
Their father 'Dapper Don' Christy Kinahan is behind one of the biggest drugs cartels in Europe which is believed to be responsible for 90pc of all illegal drugs sold in Ireland.
The brothers - along with David Byrne, a cousin of mobster 'Fat' Freddie Thompson - were in attendance at the high-profile event and block-booked the VIP Audi suite at the event.
Macklin - who is not involved in crime - has friendships with leading members of the Kinahan gang and happily poses for photos on nights out.
After the devastating loss, sources said the Kinahans were downbeat after he was beaten in the tenth round.
"This was meant to be a high point in the Kinahan's year," a source told the Herald.
"The event was planned for months and, despite several setbacks, was going to be a homecoming of sorts for the Kinahans.
"They lashed thousands of euro on the planned celebrations but this loss is a devastating blow for the crime family - as well as for Macklin."
The brothers are heirs to the Kinahan crime empire.
Daniel even manages a number of boxers at the MGM club in Costa del Crime, Spain.
Macklin's trainer Jamie Moore was shot in the front garden of Daniel Kinahan's home in Spain earlier this year.
The innocent Sky TV pundit went on to make a full recovery and was reportedly also at the fight over the weekend.
In September this year, Gerard 'Hatchet' Kavanagh (44), a senior member for the Christy Kinahan international crime syndicate was gunned down in a pub in Spain.
'Hatchet' Kavanagh was gunned down in the ruthless assassination in an Irish bar in upmarket Elviria near Marbella.
Gardai were on high alert ahead of the fight night as sources predicted the Kinahans would be making contact with Limerick's Keane gang. But sources said that this meet-up did not take place.
The entire event passed off without incident.
The Macklin fight was supposed to be the beginning of a new chapter in Macklin's career as he attempted another world middleweight title shot.
But the 'Tipperary Tornado' said he knew the writing would be on the wall if he failed to win.
"He (Heiland) stepped it up when he needed to and I paid the price," the 32-year-old admitted minutes after the fight.
"I believe I'm world class and that I'm capable of winning a world title so I will have to see where I go from here."
Promoter Eddie Hearn of Matchroom Sport paid tribute to Macklin's honesty.
"He is a credit to the sport, it is tough. Matthew will always have bundles of desire and heart," he said.
Matthew Macklin's father is from Roscommon, while his mother is from Tipperary.
Although he is English, he regularly visited Ireland as a teenager and represented Tipperary at U-16 level before focusing on his boxing career.
He has won several European titles.