LONDON — Anthony Joshua remained in the ring long after 90,000 of his supporters had filed out of Wembley Stadium, posing happily for pictures with his team and hugging just about everyone he knew.

No reason to leave early when being the heavyweight champion is so much fun.

There was a lot to love Saturday night in front of a packed crowd at England’s national stadium, where Joshua got off the canvas to stop longtime champion Wladimir Klitschko in a coming out party of sorts that electrified the boxing world.

The biggest heavyweight fight in British history was also the best. There was an epic fifth round where Joshua knocked Klitschko down and then held on himself to survive.

Just five years removed from winning an Olympic gold medal in London, Joshua stopped a fighter who dominated the heavyweight division for nearly a decade. Though the win came with some anxious moments for the hometown fans, it also established Joshua as a superstar in the making who just might be the fighter who can make boxing must-see TV once again.