And that is that for the inaugural World Athletics Ultimate Championship.

Mondo Duplantis is performing his song for the crowd as fireworks go off all around the stadium.

The TV camera pans to 1500m champion Josh Kerr and 5,000m winner Jakob Ingebrigtsen standing side-by-side as they take it all in.

Noah Lyles has organised a big party for all the athletes tonight, so maybe they'll have a few beers and end up best pals?

Thanks for your company over the past three evenings.

If you want more athletics this year, the BBC will show live coverage of the Athlos meet in London next week - so don't miss that!

Goodbye for now.

Here is how Josh Kerr achieved that brilliant 1500m win.

Josh Kerr speaking to BBC Sport after winning the 1500m: "I was not nervous. I didn't feel amazing in the warm up, but these are the kind of things that you have to overcome this late in the season, having two working calves helps a lot. I knew I was going to be in with a shot but it was about just not over-pressing too early and then leaving a couple of gears for the last lap."

On the pressure: "I think it made more sense for someone to push us on because it is late in the season and it gives them the best chance to come out on top and you will stretch out the guys who are a little more tired. I haven't raced that much but it allows me to come here more fresh."

On being so close to Cameron Myers: "He is an awesome athlete but when you know what is going in your head, I was able to look at the screen and see the gap [between us] wasn't changing. I had another gear was there and I pressed it.

"I have been doing this a long time. Danny [his coach] knows exactly what he is doing and I am with a brand that helped me in the best way, by creating my own spikes and gear. From seven weeks ago from London, I went home, I chopped wood and carried water and I was ready to go again. I am a major championship guy and I will always say that.

"Sometimes you have to come out of it to dig deeper and go further in life. Two weeks before [a race] I try to some sort of thing to get me out my routine and then I push myself for the last few weeks. If I didn't finish with a win then that was on me."

On what he thinks of the new format: "I think this sport has moved on the last few years and pressed to where it can be more exciting and anything that can push this sport on to make it more entertaining for people to watch and athletes to go out and compete. There is one more thing that we can do to get it right and that is to let athletes wear their own brands vs their country. I love my country and competing for them but we don't make money for that."

Only two women have ever run faster than what we have just seen from Melissa Jefferson-Wooden.

American great Florence Griffith Joyner ran 21.34 seconds. Jamaica's Shericka Jackson has a best of 21.41.

At the age of 25, Melissa Jefferson-Wooden has clocked 21.47. Incredible.

Image source, Getty Images

Melissa Jefferson-Wooden is in a class of her own!

"Woahhh!" she says as she crouches to the ground and tries to take in what she has just done.

A sensational time of 21.47 seconds leaves Olympic champion Gabby Thomas unable to get close despite a strong finish.

Another sprint double for the USA.

Great Britain's Amy Hunt clocks a season's best 22.10 for fourth, behind another American in Kayla White.

Image source, Getty Images

It's the final event of the first ever Ultimate Championship.

And it's all set up for a big finish.

World champion Melissa Jefferson-Wooden. Olympic champion Gabby Thomas. European champion Amy Hunt.

On your marks...

Amy Hunt produced an impressive win in her 200m semi-final a little earlier this evening.

Having been left disappointed by her performance in last night's 100m final, that will have put the 24-year-old in a much more positive frame of mind before her latest bid for a major title.

The competition, including 100m winner Melissa Jefferson-Wooden, is fierce, however.

Complete dominance from Kenneth Bednarek!

The American clocks a world-leading 19.52 seconds as he charges away from his rivals.

Letsile Tebogo cannot get close, crossing the line in 19.76, with American Courtney Lindsey third in 19.79.

That's a sprint double for Bednarek - and a whopping $300,000 from those two victories in addition to his two Ultimate trophies.

Not a bad weekend's work...

Image source, Getty Images

This should be a brilliant dust-up.

Olympic champion Letsile Tebogo, silver medallist Kenneth Bednarek, former Olympic champion Andre de Grasse.

Who will take the men's 200m title?

Greg Rutherford
Former world and Olympic long jump champion on BBC One

Saly Sarr has got a big future ahead of her, she is just 23 years of age and the ultimate champion.

Nobody can surpass Saly Sarr's leading leap in the final round of the women's triple jump final!

The Senegal athlete's first-round best of 15.06m takes her to the title.

Gianmarco Tamberi can't produce the personal best leap over 2.41m he desperately hoped to produce for his engaged audience, but the men's high jump Ultimate champion still sprints off to celebrate with the crowd afterwards.

What a show he has put on.

Two more exciting finals to come on the track, before the curtain falls on the inaugural Ultimate Championship.

The men's and women's 200m are not far away, with Great Britain's Amy Hunt involved in the final race of the night at 19:49 BST.

Image source, PA Media

We're down to the final four in the women's triple jump final.

Saly Sarr, of Senegal, still leads after her opening leap of 15.06m.

But Cuba's Davisleydi Velazco is within two centimetres of that before the final round...

Greg Rutherford
Former world and Olympic long jump champion on BBC One

That was a piece of supreme 1500m running.

Josh was totally in control, he didn't have to make many moves.

But, when he did, it was the right one.

A huge grin on the face of Josh Kerr as he lifts his Ultimate trophy.

What an incredible year it has been for him.

World indoor gold, the mile world record, Commonwealth gold on home soil, and now the first 1500m Ultimate champion.

He knew he was never letting anyone deny him today.

Image source, Getty Images

Gianmarco Tamberi is proving the star of the show in his end of the sold-out arena!

The Italian goes clear at 2.37m to put the title out of reach for American JuVaughn Harrison, who finishes with a best of 2.30m.

Tamberi calls for the bar to be raised even higher!

It's going to 2.41m - a height cleared by only six men in history.

Steve Cram
Athletics commentator on BBC One

He made that look so good. Josh Kerr grabbed hold of the race and in the form he is in now, it is going to be really hard to get past him.

Image source, Getty Images

Never in doubt!

Josh Kerr will not be denied as he takes control before powering to victory in three minutes 29.35 seconds.

Australian Cameron Myers is the only one who can get remotely close in the end.

Image source, Getty Images