Tyson Fury refused to accept he lost his rematch against unified heavyweight champion Oleksandr Usyk and claimed the judges gave him a "Christmas gift".
All three judges scored the fight 116-112 in Usyk's favour, handing the Ukrainian a second successive win over the Fury.
Fury and his promoter Frank Warren were both adamant that the Briton had done enough to win the contest in Riyadh, Saudi Arabia.
"The judges gave him a Christmas gift," Fury said.
"I feel like I won both fights. I know I had to knock him out but it's boxing and this happens. There is no doubt in my mind I won this fight.
"Frank [Warren] had me three or four rounds up and a lot of people had me up by at least two."
Fury, 36, did not answer any questions in the ring after the bout, choosing to head backstage where he eventually spoke to the media.
"I'm not going to cry over spilt milk, it's over now." Fury added.
"I've been in boxing my whole life but I'll always feel a little bit hard done by - not a little bit, a lot."
Queensberry's Warren made clear his frustration with the result in the ring and he continued to make his case for a Fury win afterwards.
"I'm dumbfounded at how they [judges] scored it," Warren said.
"His jabbing was superb, his footwork was superb, he wasn't slow. He was very evasive."
Victory for Usyk extends his unblemished record to 23 victories and further strengthens his claim as one of the greatest of this generation.
"Uncle Frank, I think he is blind," Usyk said.
"If Tyson says it is a Christmas gift then OK, thank you God, not Tyson. Thank you to my team."
All three judges scored the contest 116-112 to Usyk.
USA's Patrick Morley, Panama's Ignacio Robles and Puerto Rico's Gerardo Martinez were the three judges at ringside.
Despite coming to the same conclusion, the judges did not reach it the same way.
The judges were unanimous on rounds four, five, six, seven, eight, 10 and 11, but split for the other rounds.
Every round was 10-9 to the winner, with no knockdowns to score and none of the judges electing for a 10-10 round.
Round one – split
Robles - Usyk
Morley - Fury
Martinez - Fury
Round two – split
Robles - Fury
Morley - Usyk
Martinez - Usyk
Round three – split
Robles - Usyk
Morley - Fury
Martinez - Usyk
Round four – unanimous
Robles - Fury
Morley - Fury
Martinez - Fury
Round five – unanimous
Robles - Fury
Morley - Fury
Martinez - Fury
Round six – unanimous
Robles - Usyk
Morley - Usyk
Martinez - Usyk
Round seven – unanimous
Robles - Usyk
Morley - Usyk
Martinez - Usyk
Round eight – unanimous
Robles - Usyk
Morley - Usyk
Martinez - Usyk
Round nine – split
Robles - Fury
Morley – Usyk
Martinez - Usyk
Round ten – unanimous
Robles - Usyk
Morley - Usyk
Martinez - Usyk
Round 11 – unanimous
Robles - Usyk
Morley - Usyk
Martinez - Usyk
Round 12 – split
Robles - Usyk
Morley - Usyk
Martinez - Fury