a 90-day sentence at clark le'initleomicio. >> after the pomp and circumstance at the mgm, alvarez findspark. even there, it's hard to escape the reality of what's 5approaching on saturday night. [ speaking spanish ] [ speaking spanish ] ♪ >> it may be the biggest bout of alvarez's career, but for his 40-year-old opponent, the arena atmosphere will hardly be anything new. >> been on the stage so many times, it helps my mind and my confidence. thea experience and everything that comes along with it. crowds are cheering, all that stuff. it pumps you up a little bit. >> mosley has fought a long list of every weight. including both of the fighters following him in the ring on saturday night. now facing an opponent who is just 2 years old when mosley began his pro career, the former champion's confidence is as high as ever. >> it's proving the nay sayers wrong and letting people know, yeah, i'm still here. i'm here. i'm not going nowhere yet. so stop saying i want you to retire. or it's going to be your last fight. i don't want to hear that. i thank you for it. i don't need more of it. i'm do