The 44 year-old South African, who fights for the 61st time as pro at the Brisbane Entertainment Centre, will attempt to end the New Zealand rugby star’s unbeaten five-fight record and says his own son could deal with Williams’ lack of boxing know-how.
“When I catch him he’s going to go,” Botha told SAPA.
“I’ll drag him into deep water and let him drown. He’s never fought a guy like me – it’s stupid. Sonny should have fought my son, my son would kick his butt and he’s not even a professional.
“Sonny Bill looks like a Hollywood movie star. The trouble is he fights like one too!”
Williams, 27, has stopped three of his opponents in the first two rounds since dipping his toes in boxing part-time in 2009 and goes into the fight against multi-time world title challenger Botha as a heavy favourite to record a fourth.
Botha has been stopped three times on his way to four defeats in his last five, with an eighth career stoppage against Williams a certain sign that ‘The White Buffalo’ should hang up his gloves for good.