Derek Chisora lost his WBC heavyweight title fight against Vitali Klitschko on a unanimous points decision in Munich on this day in 2012.

Chisora took Klitschko the distance over 12 rounds, but the bout was littered with controversy before and after.

The then-28-year-old Chisora slapped Klitschko the day before their meeting at the weigh-in and the ill-feeling continued up until the first bell with a row over the Londoner’s hand wraps.

Chisora was booed into the ring and immediately aimed to get into his opponent’s face as soon as Klitschko entered after spitting water in his brother’s direction when the introductions were made.

More unsavoury scenes followed after the fight as the evening took another ugly turn when Chisora clashed with fellow British heavyweight David Haye, sparking a brawl which left Haye’s manager Adam Booth with a facial cut.

Chisora showed aggression and punch resistance in the ring, but Klitschko remained in control throughout and dominated in the opening rounds.

The Briton landed a couple of good shots in the seventh, but the Ukrainian responded with a blow near the ear which was the first time Chisora looked hurt and he landed another powerful punch the following round to exercise his authority.

Chisora kept battling until the final bell, where a unanimous verdict was announced in Klitschko’s favour with scores of 118-110 twice and 119-111.

“First of all I’m very happy to defend my title. It was not an easy fight,” Klitschko said post-fight.

“It was a good performance from Chisora, he was very motivated, putting me under pressure throughout the 12 rounds.”

Regarding the incidents in the build-up to the fight, he added: “I have respect for Chisora as a fighter but I don’t have respect for him as a human.

“He showed a bad example for all boxing, for all fighters. He came from Great Britain but he’s not a gentleman.”

Tyson Fury has promised he would go to war for England as he praised those attempting to defend Ukraine from Russia's invasion.

The British heavyweight vowed to follow the lead of the likes of brothers Wladimir and Vitali Klitschko and Oleksandr Usyk if his homeland issues a call to arms.

WBC champion Fury said he would be "first in line" if civilians were to be conscripted.

Vitali Klitschko is mayor of Kyiv, while his brother and fellow former world heavyweight champion Wladimir has joined a territorial defense brigade. Usyk, a reigning world heavyweight champion, has also signed up, as has fellow star boxer Vasiliy Lomachenko.

Fury said in a news conference on Tuesday: "Fantastic. I'll be the first one to join up if England get involved or America. I'll be first in line for the job.

"My dad will as well, me and all the boys will be signing up to defend. So that's what I've got to say.

"If you're from that country and living there, defend it. Love your woman and fight for your country, that's what I say."

Fury puts his WBC heavyweight belt on the line against Dillian Whyte at Wembley Stadium on April 23.

It remains to be seen when the likes of Usyk and Lomachenko become available to resume their sporting careers

Frank Warren, Fury's co-promoter, said: "Everybody should be absolutely pulling for Ukraine, standing up to the bully, standing up for democracy.

"Those four fighters, everybody should be behind them. It's magnificent what they're doing."

Wladimir Klitschko has called on "the entire world" to help stop the ongoing crisis in Ukraine, amid Russia's invasion of the country.

Russia invaded Ukraine on Thursday after weeks of rising political tension. That conflict escalated on Friday and into Saturday, with fighting now reported to have reached the capital, Kyiv.

Wladimir, a two-time heavyweight world champion, and his older brother Vitali, who is the mayor of Kyiv, have both pledged to take up arms to help defend the city and their country.

In a video posted to his official Twitter account on Saturday, Wladimir Klitschko spoke powerfully of the need for more action from other nations.

Heavy sanctions have been placed on Russia by the United States, the European Union and the United Kingdom, though there is no sign of a ceasefire. 

Russian officials have offered to hold peace talks with their Ukrainian counterparts, though only on the condition that Ukraine's army surrenders.

"I'm addressing the entire world, to stop this war that Russia has started," Wladimir Klitschko said in the video. 

"Just today, civilians were shot by the rockets with special operations surveillance getting killed(*), and it's happening in the heart of Europe.

"There's no time to wait, because it's going to bleed into a humanitarian catastrophe.

"You need to act now to stop Russian aggression, with anything you can have now. In an hour, or by tomorrow, it's going to be too late. Please, get into action now. Don't wait, act now, stop this war."

Multiple sportspeople and organisations have called for the end of the conflict, with Russia having been stripped of the Champions League final – initially due to be held in St Petersburg – and the Formula One Russian Grand Prix.

(*) Wladimir Klitschko's claim could not been verified at the time of publication.