Andy Ruiz Sr., the father of former heavyweight champion Andy Ruiz, was not a happy camper with his son's performance and his preparation for Saturday's rematch with Anthony Joshua.

Ruiz was outboxed over twelve rounds, with Joshua reclaiming the IBF, IBO, WBA, WBO heavyweight titles in Saudi Arabia.

Ruiz shocked the world when he dropped Joshua four times to secure a seventh round stoppage in New York City.

Fans were shocked when Ruiz weighed in at 283-pounds - 15-pounds heavier than he was back in June.

In the months leading up to the rematch, Ruiz's handlers wanted him to come in lighter than he was in the first bout.

After the fight, Ruiz admitted that he partied for three months, didn't train at top level, and wasn't listening to his handlers.

Ruiz's father would have liked to see him around 30 pounds lighter in the rematch. 

"Andy thought he was going to do good at the weight in the fight. I told him a month ago that ‘you’re not going to do good at the weight. It’s going to be too hard, because you’re going to be tired, and you’re not going to have the movement. He came overweight, that was the problem. It was too much weight for his body. He weighed 283. Plus after he eats, he was almost 290-something. There was no way he was going to do something good, so now he’s learned his lesson and now he’s going to come back," Ruiz Sr. told Boxing Social.

"All the fights that he’s done in his career, he was 255, 257, 246. The last time he fought, he was at 268, and he felt comfortable, but I told him, 'You have to lose weight,' but at that time, we didn’t have enough time to lose weight. That’s why he fought at that weight. He was not listening because of the fame. He was with a Rolls Royce, he was with his friends, he was throwing parties, and not listening to the camp. He was running by himself. We were in a house in Manhattan Beach, that we he could come with us, and stay in the house. He didn’t want to stay with us. He wanted to stay with his friend, and try to run by himself. It was the worst camp that he could be doing.

"I don’t think nothing about AJ. He’s a good boxer, and a great person. We love AJ, and he deserved this night to win. But Andy, he didn’t do the right things, that’s what happened."