Terence Crawford believes Ilia Topuria was ‘drunk’ when predicting how a fight between the pair would play out.On Sunday, UFC lightweight champion Topuria said he would knock Crawford out ‘in the first contact’ if the pair ever met in the ring ahead of the Nebraska boxer’s huge fight with Canelo Alvarez.Crawford, right, locks horns with Canelo in ‘Fight of the Century’ on Saturday nightGettyUFC champion Topuria believes he would make easy work of ‘Bud’GettyCrawford is just days away from his blockbuster ‘Fight of the Century’ with Alvarez, which takes place this weekend at Las Vegas’ Allegiant Stadium, and has already shattered records.On Wednesday, ‘Bud’ was asked at a media day about his opinion on Topuria’s comments, and his response was brutal.“That dude [is] drunk,” the 37-year-old said, before firing shots at the MMA world as a whole.“Hey, a lot of MMA guys, they drink a lot, so he must have been on that alcohol that day.”Topuria is arguably the biggest star in the UFC right now, having claimed his second title in Dana White‘s promotion three months ago with a vicious KO win over Charles Oliveira.He has since been linked to make his first title defence against Liverpool’s Paddy Pimblett to settle the pair’s bitter rivalry that stems back several years.Although extremely unlikely, a crossover fight with Crawford is not as far-fetched as it once was, given the involvement of Topuria’s boss, White, in the boxing world, and the UFC-backed team involved on the night.Crawford, meanwhile, a former undisputed two-weight champion and current WBA super-welterweight champion, has moved up two weight classes for his fight with Alvarez.It is a clash he himself has described as the ‘biggest opportunity’ of his career, during a conversation with talkSPORT, ever since strapping up the gloves at the age of seven.“It doesn’t get any bigger than this,” he told talkSPORT this week in Las Vegas.Crawford said MMA fighters ‘drink a lot’ – so Topuria must’ve been ‘drunk’ when issuing his call-outSeconds Out/Getty“Especially fighting a guy like Canelo, who’s been undefeated in this weight class, who’s railroaded everybody that has stepped in front of them in this weight class.“This is a massive fight. It’s the biggest fight in boxing and I’m looking forward to it.”Crawford is undefeated in 41 professional bouts, with 31 of those victories coming by way of KO.In 245 rounds since his 2008 debut, ‘Bud’ has never been officially knocked down once.But it is the same for his opponent, Canelo, who, although having suffered two defeats in his 65 pro fights, enters the ‘Fight of the Century’ as the favourite.The Mexican great is the current undisputed super-middleweight champion, and some members of the boxing fraternity are unsure if Crawford will be able to handle his power.We are just days away from one of the biggest boxing fights of all timeThe pair can barely be separated, and will be staking stellar professional records on Saturday nightCrawford, however, remains confident that he can withstand Canelo’s best punches.“Hey, listen. I have never been down yet in my professional career, so they can question it all they want,” he told the media on Wednesday.“Have I been hurt? Yes, I have. Has he been hurt? Yes, he has.“It is what it is. Let’s just figure it out on the night.”The official Alvarez vs Crawford press conference takes place on Thursday night, before the fights’ weigh-in on Friday morning, and the ceremonial version later in the day.talkSPORT will be across all the biggest talking points live from Las Vegas right through until fight night.