Fight fans are in for a treat on BT Sport this Saturday night with two world title fights at the return of a UFC legend coming to you exclusively live from UFC 266 in Las Vegas.

Featherweight king Alexander Volkanovski takes on Brian Ortega in the main event while Valentina Shevchenko looks to extend her dominant reign atop the flyweight divison against Lauren Murphy an in intriguing co-main bout.

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But it is Nick Diaz's return after more than six years out of action that has captured the imagination most ahead of UFC 266 with the former Strikeforce welterweight champion resuming rivalries against fellow legend Robbie Lawler more than 17 years after their first meeting at UFC 47.

Here's all you need to know to keep up with the chaos this weekend on BT Sport.

When is UFC 266: Volkanovski vs Ortega?

The event will be shown exclusively live at 1am (3am main card) overnight on Saturday 25 September on BT Sport 1 HD and across our digital platforms.

UFC 266: Volkanovski vs Ortega Fight Card

Alexander Volkanovski (c) vs Brian Ortega - Featherweight

Valentina Shevchenko (c) vs Lauren Murphy - Women's flyweight

Nick Diaz vs Robbie Lawler - Middleweight

Curtis Blaydes vs Jairzinho Rozenstruik - Heavyweight

Jessica Andrade vs Cynthia Calvillo - Women's flyweight

UFC 266: Volkanovski vs Ortega prelims

Marlon Moraes vs Merab Dvalishvili

Dan Hooker vs Nasrat Haqparast - Lightweight

Shamil Abdurakhimov vs Chris Daukaus - Heavyweight

What if I can't watch UFC 266: Volkanovski vs Ortega live?

No problem! Our brilliant enhanced video player is available on both the BT Sport app on mobile and tablet and BTSport.com.

You won't miss miss a second of the action thanks to our interactive timeline, which lets you control your own viewing experience by allowing you to scroll back through the entire card - or skip to your preferred fight using our 'chapters' feature.

And most importantly, the entire card will remain available to watch spoiler-free immediately after broadcast - as it will on our large screen device app. Bookmark this page and return at your leisure to tune in from the outset.

You can also watch a replay of the fight card on BT Sport on Sunday night. Check the TV Guide for more information.

How to live stream UFC 266: Volkanovski vs Ortega on a phone or tablet

Subscribers wanting to watch the fights can open the BT Sport app on Saturday night and follow the link at the top of the homepage.

The app is available to download for free on iOS and Android phones and tablets.

How to live stream UFC 266: Volkanovski vs Ortega on a laptop

Follow this UFC 266: Volkanovski vs Ortega link or access via bt.com/sport when our coverage gets underway.

How to watch UFC 266: Volkanovski vs Ortega on TV

*BT Sport customers can download the BT Sport app on PS5, Xbox Series X, Apple TV, NOW and many more devices.

Make your device's home page spoiler-free!

Our award-winning app on mobile and tablets allows you to customise your home page to avoid seeing spoilers the morning after the big fights.

To make the switch to a spoiler-free home page, open up the app and click 'More' in the bottom corner.

Under 'Settings' change the 'Landing page' option from 'Home' to 'Spoiler-free replays'.

You will then need to exit and close your app. Once you reload the app, your home page will default to the 'Spoiler-free' tab in the Sports navigation menu.

Once you're done in spoiler-free mode, you can either revert your home page back to the default option - or simply navigate away from the spoiler-free tab and check out some of our other must-see content across the app.