Live coverage of the Sonny Bill Williams-Francois Botha boxing match Sonny Bill Williams and Franz Botha square off at the weigh-in. THE South African boxing legend who retired Jeff Fenech says Sonny Bill Williams has made a terrible decision to fight Francois Botha. Quade Cooper expected to fight around 8.30pm AEDT, while the SBW bout starts around 9.30pm. During the 90s, Holiday defended his IBF world lightweight title six times before losing to Shane Mosley in a pay-per-view mega fight in the US in 1997. Holiday was a South African ammateur star alongside the Durban-based Botha but now lives in Brisbane. He said he had to double take when told Williams was taking on Botha, a fight that occurs at The Brisbane Entertainment Centre tonight and is live on Main Event. What is he doing this for? It is ridiculous," Holiday said from his Redlands boxing gym. This is too big a step up for Williams. Never, in a million years, would I advise a fighter with Williams' experience to take on Botha. "Williams has only had five fights and hasn't fought anyone with Frans" ability. He's a very good rugby player, but he has a long way to go in boxing. In this sport though anything can happen and you never know, but 99 times out of 100 Botha is going to win and probably knock him out. Williams weighed in at 107 kilograms yesterday while Botha was 115kg. Williams freely admits he is taking on an opponent that should account for him easily on paper, yet Botha is the $2.20 outsider with Williams paying $1.60 for the win. Botha says he is the one with the most to lose as it would be embarrassing for him to fall to a boxing novice. Botha is 44 and has lost his last three fights. He has fought the best heavyweights in the world during the past 20 years including Mike Tyson, Lennox Lewis and Evander Holyfield. He looked impressive during pad work earlier this week and has lost 10kg in the lead up the fight. Still, Williams incredible athleticism and power is widely predicted to overwhelm Botha.