Eddie Hearn said he thought Amir Khan was “completely torn to pieces” in the Kell Brook fight on Saturday night, but praised him for refusing to quit regardless.
The Matchroom promoter previously represented both boxers but was unable to fight each other when they were in their primes.
Instead, the fight went without his involvement on Saturday night as Brook won by TKO in the sixth round.
In reaction, Hearn told the DAZN Boxing Show: “Watching the fight, I had a few thoughts.
“Number one is – it would have been such an amazing fight in their primes, because it was always exciting because of the rivalry.
“We have to give massive props to Amir Khan because he was completely taken down at the start of this fight.
“He was rattled by a jab in the first round, his legs were all over the place from the first bell, but he didn’t give up.
“Fair play for him, he never stopped trying. And he knew deep in his heart, in fact, he would have known in boot camp that he had been shot.
“But he never stopped trying to win.”
Although no longer promoting Brook, Hearn is on good terms with the winner.
He explained: “Kell FaceTimed me last night and I had a really good chat with him.
“I said to him, ‘You looked nervous.’ He said, “I was nervous.
“But then I saw Amir come out and he looked petrified.
“I think everyone doubted each other.”
There have been talks following a potential fight between Brook and Hearn’s new young star at welterweight – Conor Benn.
“Conor Benn’s goal is to become world welterweight champion,” Hearn insisted.
“As I told Kell Brook last night, I think Conor Benn is the best welterweight in Britain.
“Now, following this performance by Kell Brook, many will feel that he is.
“Kell Brook vs. Conor Benn is a brilliant fight, a brilliant fight.
“A guy at the end of his career, a guy a young rising star.
“Is it too early? It’s too late?
“I said to Kell last night, ‘Why would you even think about fighting middleweight Chris Eubank Jr when you can have a massive welterweight fight against Conor Benn? “”