Floyd Mayweather Jr.'s opponents have a habit of insisting that they will be the first to blot his thus far perfect professional record, but all too often they sound as if they're trying to convince themselves as much as anyone who will listen.
The one recent exception was Miguel Cotto, who is the personification of cool, calm self-confidence. Many of the rest -- from Oscar De La Hoya to Ricky Hatton to Victor Ortiz to Robert Guerrero -- seemed at times almost overwhelmed by the whole experience.
Canelo Alvarez seems different. He may be a mere 23 years old, but his approach throughout the prefight promotion, and as he sat down with reporters at the MGM Grand on Tuesday, was one of total relaxation, to the point of serenity.
"Of course," he said through a translator. "I feel very good and calm, because I've worked very, very hard, and that's what's going to help me."
Nor does the pomp and circumstance that surrounds a Mayweather fight appear to have distracted him, or added to his stress, in any way.
"This is a part of it. I understand that," he said. "And all I can do is try and enjoy it, enjoy every single moment. I love what I do and I'm enjoying it."
There is, he says, no special secret, no particular preparation to facilitate such a laid-back attitude.
"It's my personality," he said. "I've always been like that. I've got a very strong mind. I've always been that way."