It means that the Irish end the meeting with 19 winners out of the 28 races

Gordon Elliott finishes as top trainer - both he and Willie Mullins had six winners apiece but Elliott had three second places compared to Mullins's two.

Ruby Walsh's four winners on Thursday also saw him named leading jockey again.

That's it for Cheltenham 2017. You can follow all of the reaction on the BBC Sport website.

Goodbye and thanks. 

What a day for jockey Robbie Power and trainer Jessica Harrington.

First, Sizing John wins the Gold Cup and then they complete a double with Rule The World for another Irish-trained winner.

Image source, Getty Images

Cornelius Lysaght
BBC horse racing correspondent at Cheltenham

Sometimes you have outstanding ones but I think it's been a good Festival. I think this is a bit of a transition period because we didn't have our champions back. Buveur D'Air from the Champion Hurdle is likely to go on and Sizing John is definitely a horse to come back - he's a relatively young horse at seven.

Full result 

1 Rock The World (Robbie Power) 10-1 

2 Gardefort (Daryl Jacob) 20-1

3 Theinval (Jeremiah McGrath) 9-1 

4 Dandridge (Davy Russell) 13-2 

24 ran

Rock The World (10-1) wins the Johnny Henderson Grand Annual Chase for jockey Robbie Power and trainer Jessica Harrington.

Bright New Dawn and Croco Bay are still leading with two to go.

Velvet Maker and Croco Bay are the early leaders.

And the last race of the 2017 Cheltenham Festival, the Johnny Henderson Grand Annual Chase, is underway with 24 runners racing over two miles.

Meanwhile, in the world of tennis, there is disappointment for fans of Nick Kyrgios...

After four days and 27 races, it all comes down to this, the race named after trainer Nicky Henderson’s father, and the last chance for punters to claw back some money.

Henderson has won the race twice and finished second four times over the past decade and his hopes are with Theinval , ridden by Jeremiah McGrath.

Paul Nicholls has a good chance with Le Prezien while Rock The World  for Gold Cup winners Jessica Harrington and Robbie Power, is not without a chance.

Image source, Getty Images

Image source, Rex Features

Do you know your Roast Beef from your Funky Chicken? And what football purchase has Michael Essien's wife made this week? Test yourself with BBC Sport and A Question of Sport's weekly quiz here .

So your horse has just gone and won at the Cheltenham Festival but Champagne Classic's owner Michael O'Leary's reaction was a bit bemused after the horse's win in the Martin Pipe Conditional Jockeys' Handicap Hurdle for trainer Gordon Elliott.

"I think that was miraculous as he's probably the worst horse we own," said the airline boss.

"It will mean more to Gordon as this is a race he's always wanted to win because he's very close to Martin. 

"When you buy in numbers there some are duds and he's one of them! The jockey gave him a great ride. We should be very grateful and very humble." 

Image source, PA

On Wednesday, the odds-on favourite for the Queen Mother Champion Chase Douvan was surprisingly beaten in one of the all-time Festival shocks.

But there is an explanation behind the performance of the Willie Mullins-trained horse. 

Image source, Getty Images

2006: War Of Attrition, owned by Michael O'Leary, trained by Mouse Morris and ridden by Conor O'Dwyer, won the Cheltenham Gold Cup, the feature race on the final day of the 2006 Festival.

Image source, Getty Images

That's a sixth win of the Festival for Gordon Elliott after JJ Slevin, a nephew of Aidan O'Brien, triumphs on Champagne Classic in the Martin Pipe Conditional Jockeys' Hurdle.

The owner of the horse is airline boss Michael O'Leary and that brings us back to another great moment in history for O'Leary.

Full result:

1 Champagne Classic (J J Slevin) 12-1 

2 Verni (Thomas Cheesman) 25-1 

3 Runfordave (Donagh Meyler) 9-1 

4 Coo Star Sivola (Lizzie Kelly) 13-2 

23 ran

Champagne Classic (12-1) wins the Martin Pipe Conditional Jockeys' Hurdle.

Two to to Coo Star Sivola is still in contention but Champagne Classic has moved up well.

Coo Star Sivola is the early leader ahead of the intriguely-named Doesyourdogbite but there are still plenty with chances.

The 24 runners are on their way in the Martin Pipe Conditional Jockeys' Handicap Hurdle after a delay for Champagne Classic to get some running repairs on his saddle

Lizzie Kelly on Coo Star Sivola will hope to make up for her Gold Cup disappointment.