Sunday morningWBC & Vacant Ring Magazine Welterweight Title (12 Rounds)Floyd Mayweather     vs     Robert Guerrero     03:00 SS2LAS VEGAS. Robert Guerrero wants to humble Floyd Mayweather in Las Vegas on Saturday night."Not just humble Floyd but humble the boxing world,” Guerrero says of his mission. "Some people think Floyd is a god with the way he lives, the way he spends money.”Guerrero, nicknamed The Ghost, wants to become the first man to beat Mayweather and intends taking over the WBC welterweight title."Some people think he is unbeatable. That 0 has to go. He’s going to have his first loss,” Guerrero said this week as he prepared to take on the man regarded by many as the best boxer in the world.Guerrero suspects Mayweather’s inactivity since June last year will have more of an impact on the champion than he will admit."Having that year off … you have that ring rust,” Guerrero said. "It’s going to take a little time to shake off that ring rust. After a whole year’s layoff he’s going to feel the punches more.”Guerrero, who beat Andre Berto on points last November, expects Mayweather to be formidable, nevertheless."Floyd is a very smart fighter and a very sharp guy. If he is slowing down, his slower is faster than almost every other guy out there.”But Mayweather plans on making The Ghost feel a few blows as well."Everybody always says what they’re going to do to me,” Mayweather said. "He is a solid opponent. He talks a good game. Now we have to see if he can fight as well as he talks. He’s more like a grappler, a wrestler, than a boxer.”Guerrero, whose professional record is 31-1 with 18 knockouts, has won all 15 his fights since 2005. Mayweather has won 26 of his 43 fights inside the distance."I feel unbeatable,” Mayweather said. "I’m in tip top condition. I’m in great shape. I have been working hard. "I just call it [the layoff] a vacation. Sometimes the body needs time to heal. The body needs time to rejuvenate. The body needs time to rest.”Mayweather’s father, Floyd Sr, is his trainer and exchanged harsh words with Guerrero’s father, Ruben, earlier this week."I don’t have to fight his father,” the younger Mayweather said. "Like I told my dad, just carry yourself in a classy way.”