I'm in tremendous shape and my power is still increasing so much

Frans Botha

"One thing the people know about me is that I come to fight - I never lay down. I believe I'm the best heavyweight out there and I want to be once again heavyweight champion of the world."

Botha, who lasted five rounds against Tyson last year, said: "I expect a harder fight against Lewis.

"Mike Tyson was really an easy fight. For five rounds I was winning and it was so easy.

Mike Tyson's 38 second fight proved farcical

"It was probably too easy for me because I got a little over-confident, a little cocky in there and started fooling around - and I paid dearly for my mistake.

"But Lennox is a different style. Mike is very predictable, that's why it was so easy for me, but I think Lennox has a different style and is going to make it a lot more difficult."

Botha, who has registered 25 knockouts in his 40 wins against two losses and one draw, nevertheless believes that he can cause an upset.

"I'm in tremendous shape and my power is still increasing so much," he said.

"I know that once one of my punches land, I'm really going to hurt him."