Conor McGregor

The 27-year-old Irishman recently shocked the world when he announced his retirement on social media.

The 27-year-old Irishman announced he was quitting the sport on Twitter earlier this week.

Conor McGregor and Nate Diaz were set to face off at UFC 200 on 9 July in Las Vegas.

Conor McGregor will fight Nate Diaz at UFC 200 on 9 July in Las Vegas

Peter McCabe, chief executive of UK brain injury charity Headway, claims MMA has 'no right' to be called a sport.

'The Notorious' is looking to avenge his first UFC defeat despite pledging to defend the featherweight title.

Diaz stunned UFC with a submission victory over McGregor in March.

Conor McGregor beat Jose Aldo at UFC 194.

Brazilian Fabricio Werdum continues standoff with Irishman Conor McGregor

A new mixed martial arts video game launches this week on PS4, Xbox One and PC.

Featherweight UFC champ takes on heavyweight US comedian in new Clueless Gamer video.

McGregor and Holm suffered defeats that shocked the UFC universe at the MGM Grand in Las Vegas.

Tyson Fury reopens debate between boxing and mixed martial arts.

MMA fighter had initially shown restraint after suffering his first career loss.

Fiery featherweight champion steps up two divisions against UFC stalwart at the MGM Grand Garden Arena.

McGregor was due to face Rafael dos Anjos in title bout before the lightweight champion injured his foot.

Holm will make her first defence of bantamweight belt she won by knocking out Ronda Rousey.

While Mayweather is now retired, McGregor holds his next fight against Nate Diaz at UFC 196 this weekend.

Diaz steps in for the injured Dos Anjos, while McGregor will move up two weight classes.

Reports suggest that the UFC are now searching for a replacement after Brazilian broke his foot in training.

Rather than defend his featherweight title, the outspoken star is moving up to fight for the lightweight belt.

"The Notorious" is looking to become the first fighter in UFC history to hold two world titles concurrently.

The Irishman barely broke a sweat in dropping the Brazilian inside the first round.

Reigning featherweight champion puts his title on the line in front of a capacity crowd in Las Vegas.

Premier featherweights set to go head-to-head at the MGM Grand in Las Vegas on 12 December.

Conor McGregor faces Jose Aldo at UFC 194 on 12 December.

Chad Mendes faces Conor McGregor for the UFC interim featherweight championship. Find out how to follow the fight live.