Chael Sonnen, a former UFC fighter, doesn't think the size difference matters much. He talked about it on the Good Guy/Bad Guy podcast.
"I don't buy into all this that there's a weight difference. I really don't... This old idea about size and its usefulness, historically, is just not true. Muhammad Ali weighed 198 pounds at his best. Mike Tyson never had a reach or weight advantage over a single opponent."
Sonnen pointed out that smaller fighters have often won against bigger ones in boxing history. He also talked about Canelo's situation.
"Canelo is in a situation where there really is no room for error... He, at 21 years old, was given an opportunity... he was in the ring with a 35-year-old Floyd Mayweather, and he was dismantled... People decided they love him... Someone in every era is chosen to be the face of boxing"
Crawford doesn't think his size will be a problem either. He told Max Kellerman from Ring Magazine:
"When you look at the history of boxing, more little men moved up in weight to beat the bigger man... I can name boxers for days who were smaller, who moved up in weight, consistently and were successful"
Crawford mentioned fighters like Floyd Mayweather, Manny Pacquiao, and even Canelo himself as examples of smaller boxers who've won against bigger opponents.
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The fight will be a big deal. Canelo will defend his undisputed super middleweight title. Crawford will move up two weight classes for this match. Both fighters have a lot to prove, and fans can't wait to see what happens.