By Miguel Rivera

Eddie Hearn, promoter for Daniel Jacobs, explained that Canelo Alvarez demanded a clause for a second day weigh-in - or there would be no deal for their three belt unification.

Jacobs weighed in at 160-pounds on Friday, but he was a shade over 173-pounds on Saturday morning.

The clause in place, called for a limit of 170-pounds on the morning of the fight. There was a penalty in place, of $250,000 per pound.

Because of his inability to meet the limit of 170 - Jacobs is facing a penalty of $1 million - which gets removed from his $10 million guarantee.

The fight was never in danger and the contest went forward at the T-Mobile Arena in Las Vegas.

Canelo walked away with a twelve round unanimous decision to unify the WBC, WBA, IBF middleweight titles.

"It was a request only of Canelo and his team, to come in at 170-pounds. [Jacobs] is allowed to come in at whatever weight he wants under a certain limit. He could have come in at 179-pounds. He doesn't lose a title, he doesn't get fined by a commission. It was just a personal request [by Canelo]," Hearn told ESPN Deportes.

"It was a request that Danny Jacobs believed that he would have no problem. He believed that he would be 170. He thought 'I just fought Derevyanchenko, I was just 170.5 [on the morning of that fight] and then I went to the toilet and made the weight.' It was not a case of 'ha, ha we're going to come in heavy.'

"It was [a case of] we can come in at whatever weight - but [because Jacobs did that] there are going to be some penalties. He woke up in the morning and was 173, and said 'okay.' He had to rehydrate safely after the weigh-in. In my opinion, this should have never been in the contract - but we wouldn't have got the fight without it."