Floyd Mayweather Jr. is determined to silence his critics in his upcoming rematch with Marcos Maidana on Saturday at the MGM Grand Garden Arena in Las Vegas, Nevada.

Mayweather, who will put his unblemished 46-0 record on the line again, took a lot of criticisms for his performance in their first fight, but the reigning pound-for-pound king is determined to silence his critics.

And for him to do that, Mayweather said that he will make a strong push to score a knockout victory against Maidana, who managed to push Floyd Jr. to the limit before taking a majority decision loss in their first fight in May.

"I need a knockout and I'm going for it," Maidana said via BoxingScene. "I need it to make a statement. First for myself, I want to do it for me."

Mayweather, who will also put his World Boxing Council welterweight and light middleweight titles on the line along with the World Boxing Association welterweight crown, knows that it will be easier said than done.

"Maidana is always in top shape. He absolutely deserves this rematch. I commend him for stepping up and making it happen again. I'm a true champion and a true champion never backs down," Mayweather said.

But if he finds an opportunity to go for the kill, the 37-year-old unbeaten champion reiterated that he is still capable of pulling off a stoppage win despite failing to score a knockout in his last four fights.

Mayweather said that he trained harder for the rematch compared from the first fight, saying that he feels stronger this time, and fans should expect an action-packed showdown.

"We've had a remarkable training camp. Truly unbelievable," Mayweather said. "I feel a lot stronger than last time. It's about hard work, dedication, prayers, belief and a good team. I know I'm almost 40, but I'm still going strong. I want to go out there and perform. The first fight was very interesting. Hopefully this time around the fight is even more exciting."