Cue Card is pulled up. Applause breaks out from the main stand as the punters watch on the big screen. A sad sight.

Un De Sceaux stills leads, but Balko Des Flos is on his shoulder.

Sorry you old romantics out there... Cue Card is struggling with six to go. He might not last much longer...

Un De Sceaux takes control after the fifth fence as Cue Card struggles to find his rhythm after that quick start.

Sub Lieutenant is separating the two heavyweights...

Cornelius Lysaght
BBC horse racing correspondent at Cheltenham

We have been talking about Cue Card taking part in his seventh festival but Un De Sceaux is favourite to win in his fourth festival.

Rory Burnand
BBC Radio 5 live at Cheltenham Festival

Nervy moments for Un De Sceaux's owners

Cue Card shoots straight off the line to lead the seven-strong field...

The cumulative CVs of Un De Sceaux and Cue Card are quite incredible.

Seventeen Grade 1 winners.

Hundreds of thousands of prize money won.

Over 200 miles ran.

Expect an interesting tactical battle between the pair... and they're OFF!

Rory Burnand
BBC Radio 5 live at Cheltenham Festival

The beloved Cue Card!

Image source, BBC Sport

Cornelius Lysaght
BBC horse racing correspondent at Cheltenham

It's going to be fantastic to see Cue Card in action again today. He's running for the seventh time at Cheltenham. He's symbolised what jump racing is about for the last decade or so. He's a popular horse, winning 16 races in his career and taking home prize money of £1m.

In the dark blue corner... is Cue Card.

Ridden by Paddy Brennan, the 12-year-old veteran is second favourite behind Un De Sceaux.

Image source, Getty Images

In the sky blue corner... is Un De Sceaux.

The 10-year-old is bidding to retain the Ryanair Chase, one of the four wins for Ruby Walsh at the Festival last year.

The odds-on market leader has a tremendous record having won 20 of his 26 career starts and there is no suggestion his powers are on the wane after he claimed a historic third victory in the Clarence House Chase at Ascot in January.

Of course, he won't be saddled by the injured Walsh, with Paul Townend taking over the ride.

Forget about Anthony Joshua v Joseph Parker/Deontay Wilder. There is only one heavyweight bout that everyone at Cheltenham wants to see...

Un De Sceaux v Cue Card...

Somebody's had an early winner or two...

Image source, Reuters

Winning trainer Gordon Elliott, speaking to ITV Sport: "It is a great day, the horses are flying. To win the first and second races is unbelievable. I'm lucky to have the staff and the horses I have.

"It's unbelievable to have five winners now this week - I can't believe it."

13 Delta Work D N Russell 6-1

21 Glenloe B J Geraghty 9-2 Fav

23 Connetable Harry Cobden 33-1

15 Taj Badalandabad T Scudamore 40-1

Image source, BBC Sport

We said Gordon Elliott had a chance of another winner with Glenloe - and he did. But it was another of his stable, Delta Work - a 6-1 shot, which gives it him.

Image source, PA

There's a long pause as the stewards deliberate... the Cheltenham crowd holds its breath.

"The winner is Delta Work."

Huge cheers from the course, but probably the loudest one comes from trainer Gordon Elliott. He's got another!

Oh my word. Who's got it? We don't know. It's a photo finish between Delta Work and Glenloe. It looked to me like Delta Work had nabbed it, but even the legendary AP McCoy says he doesn't dare call it....

Image source, Reuters

Two to go.... all over safely...

Round the corner... Who Dares Wins, aptly, goes for the line first... but it is Delta Work and Glenloe who emerge after the final fence.

It's a race for the line...

Past the halfway stage, coming up to a trio of quick hurdles. This could see one or two lose touch... Forza Milan is one of them, lagging up at the back.

Everyone else is together in a tight pack. Still Sykes out at front with Connetable just behind...