Wladimir Klitschko vs. Tyson Fury, billed as Kollisionskurs (German for Collision Course), was a professional boxing match contested between WBA (Unified), IBF, WBO, IBO, and The Ring heavyweight champion, Wladimir Klitschko, and Tyson Fury.

After originally being scheduled for 28 September 2013, Haye pulled out a week before the fight with a cut above his eye that he said happened during sparring.

[8] Haye also reportedly said that he wasn't going to give Fury a pay day, a decision that would later come back to haunt him when he eventually made his return to boxing.

After Fury defeated Klitschko, he stated that he would never give Haye the chance to fight him again after he let him down twice and wasted his time and money.

[9] After nearly a year out of the ring as a result of the Haye saga, Fury knocked out Joey Abell in February 2014 and was then left to face Derek Chisora for a second time, in his third world title eliminator bout.

He went on to launch a rant at Klitschko, calling him "boring" both in and out of the ring, and that he wanted to rid him and his jab and grab style out of the division.

Fury told Klitschko that he had dominated a weak era for heavyweights and that he had "reigned supreme over a load of bums".

Fury continued the mind games by getting up from his chair and kicking it aside, challenging Klitschko to call him a clown again and shouting that he would fight him now and appeared to have to be restrained.

Fury later stated that he didn't actually mind being called a clown, and that his act was all part of the entertainment that boxing needed.

Fury stated that Klitschko was the man standing in front of his entire future and he couldn't let the opportunity slip.

"[16] When discussing each other's boxing skills, Klitschko said that he thought Fury was a good counter puncher and moved well for a tall man.

Ironically, within a couple of days Klitschko did pull out with a calf injury, and the fight on 24 October was cancelled and rescheduled for 28 November.

Some of the rounds were close but were decisive in Fury's favor due to his ring generalship and being more active than Klitschko who appeared flustered.

From the start Fury's tactics appeared to be to try and nullify Klitschko and make him feel uncomfortable, even putting both his hands behind his back several times during the fight.

As a result of this, Klitschko was noticeably gun shy during the fight, particularly with his right hand, seemingly wary of being countered.

Fury landed the best punch of the fight in the ninth round, after the pair had been holding Klitschko turned his back momentarily and when he turned to face Fury again he was caught with a left hook to the face, with Klitschko just managing to avoid some follow up punches.

Fury then celebrated by singing a version of Aerosmith's "I Don't Wanna Miss A Thing" to his wife Paris.

This was due to Fury having to fight Klitschko as opposed to the IBF's mandatory challenger, Vyacheslav Glazkov.

On 24 June 2016, Tyson Fury announced that the fight would be postponed due to an ankle sprain he received during training.

Also in June 2016, it was announced that Fury had tested positive for the banned substance nandrolone, a performance-enhancing drug, in his previous fight with Christian Hammer, which was held nine months prior to the Klitschko bout.

[30] On 12 October, Fury vacated the remaining titles, citing problems with depression after testing positive for cocaine.

The pair fought at Wembley Stadium in London on 27 April 2017, with Joshua winning by TKO in the eleventh round.