Anthony Joshua’s rematch with Andy Ruiz Jr is set to take place in New York again at Madison Square Garden.

The Brit lost his heavyweight world titles in a stunning upset, as the Mexican-American forced a stoppage in the seventh round.

The rematch clause in the original fight’s contract has now been triggered by Joshua’s team, with the fight set to take place in November or December.

And The Independent understands Sky Sports have already begun preparations for the contest to be staged back at Madison Square Garden, despite hopes from Joshua’s promoter Eddie Hearn to bring it to the UK – at Wembley, Cardiff’s Principality Stadium or the Tottenham Hotspur Stadium.

Hearn recently revealed there will be a range of dates available for them to stage the fight from November 16 and December 14.

But Ruiz had done the unthinkable to become unified heavyweight champion.

The A-listers at ringside could barely believe what had happened.

Ruiz was delighted with the victory as he jumped in the middle of the ring.

Griffin waved it off as Joshua did not walk out to him when ordered to.

Joshua did not respond to the referee's commands, leading to the fight being waved off.

Joshua had to use the ropes to get back to his feet.

When he went down for the second time in the seventh, the end was nigh.

But he was floored again in the seventh and this time Ruiz went for the kill.

Joshua was able to regain his composure and see through rounds four, five and six.

The defending champion needed all of the time afforded to him to recover.

The unthinkable looked to be turning into reality as Joshua just beat the count before the bell.

When Joshua was put down for a second time in the third round, the champion was close to an early exit.

Joshua looked as shocked as everyone else at the sudden resurgence.

But Ruiz stunned everyone when he sent Joshua to the canvas in the same round.

The Mexican-American looked to be heading out of the fight as he staggered back to his feet.

But after finding his range, Joshua started to exert his dominance in the third.

Ruiz showed enough to worry Joshua though as he kept the defending champion honest.

Joshua tried to assert the jab put stayed out of range of Ruiz's left hook.

The first round saw little of note as the two showed caution.

James Corden and Jamie Redknapp were two of many famous faces in attendance at the Garden.

“Anthony feels as though it would be special to rewrite history and get the win at Madison Square Garden,” Hearn revealed.

Joshua was gracious after suffering the first loss of his professional career, but maintained he will return to win back his belts.

“Boxing is a tough sport, but I train hard and I got beaten by a good fighter, it will be interesting to see how far he goes, but this is all part of the journey,” Joshua said after the fight.

“This is the risk we take, every fighter deserves respect so congratulations to him. I respect every fighter, this is all part of the legacy, it’s how strong I came back. He’s a champion for now, I shall return.”