Conor McGregor vs Khabib Nurmagomedov at UFC 229: Results, updates and pictures from Las Vegas

Khabib Nurmagomedov (red gloves) beat Conor McGregor (blue gloves) via tap out to retain his UFC lightweight title. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

The Russian Khabib ended McGregor's attempt to win back the title when he sealed a brutal submission victory with a rear naked choke hold in the fourth round. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Nurmagomedov started a brawl after he jumped out of the cage and headed straight for McGregor's teammate and corner-man Dillon Danis. One man jumped the fence, swinging blows at McGregor before being bundled away by security. UFC boss Dana White later told Fox Sports that three members of Nurmagomedov's team were arrested. Nurmagomedov was not presented with the belt but was announced as the winner. (Image: AFP)

Tony Ferguson (red gloves) took on Anthony Pettis (blue gloves) in the co-main event of the night during UFC 229 (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Tony Ferguson (red gloves) celebrates after beating Anthony Pettis (blue gloves) during UFC 229 at T-Mobile Arena. Pettis was unable to continue after breaking his right hand (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Hollywood strar actor Mel Gibson in the stands during UFC 229 at T-Mobile Arena in Las Vegas. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Derrick Lewis (red gloves) fights Alexander Volkov (blue gloves) during UFC 229 at T-Mobile Arena. The Russian dominated the match early. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Derrick Lewis turned the match around in the last few second. He knocked out Volkov with 11 seconds to go. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Michelle Waterson (red gloves) fights Felice Herring (blue gloves) during UFC 229 at T-Mobile Arena. Waterson defeated Herrig by a unanimous decision 30-26, 29-28 and 30-27. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Sergio Pettis (red gloves) fights Jussier Formiga (blue gloves) during UFC 229 at T-Mobile Arena. Formiga defeated Sergio Pettis by 30-26, 29-28, 29-28. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Vicente Luque (red gloves) celebrates beating Jalin Turner (blue gloves) during UFC 229 at T-Mobile Arena. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Aspen Ladd (red gloves) fights Tonya Evinger (blue gloves) during UFC 229 at T-Mobile Arena. Ladd won the match by a knockout in the first round. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Scott Holtzman (red gloves) fights Alan Patrick (blue gloves) during UFC 229 at T-Mobile Arena. Holtzman knocked out Patrick in the 3rd round. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Lina Lansberg (red gloves) fights Yana Kunitskaya (blue gloves) during UFC 229 at T-Mobile Arena. Kunitskaya won by 30-27, 30-27, 30-27. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Gray Maynard (red gloves) fights Nik Lentz (blue gloves) during UFC 229 at T-Mobile Arena. Lentz beat Maynard by Technical Knock Out in R2. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)

Ryan LaFlare (red gloves) fights Tony Martin (blue gloves) during UFC 229 at T-Mobile Arena. The first fight of the night was won by Martin. (Image: Stephen R. Sylvanie-USA TODAY Sports for Reuters)