(CNN)It's a fight that has been years in the making. Within hours, Floyd "Money" Mayweather and Manny "the Pacman" Pacquiao will go head-to-head at the MGM Grand Garden arena.
Face-off: Mayweather vs. Pacquiao by the numbers
Mayweather has told fans to be ready for an epic battle when he faces his rival in Las Vegas on Saturday night. It'll be Sunday morning in Asia when the bout is beamed to millions of ecstatic Pacquiao fans in his home country, the Philippines.
With the time for talking all but done, 38-year-old Mayweather told CNN: "He's going to come and bring his best -- and his best is going to bring the best out of me.
"My job is to go out there and be Floyd Mayweather and do what I do best. Both sides have said a lot, but it's all about the two competitors."
Unbeaten in 47 professional fights, Mayweather played down claims from some quarters that he had appeared subdued in the build-up to what some are calling the "Fight of the Century."
"I feel good," he said. "I'm very, very happy. My team have done a tremendous job.
"I have grown and matured over the years. I'm not far from 40 years old, and I have been in this sport as a professional for 19 years. You outgrow some things.
"I know I can fight, and I know the guy I am fighting. It is not an easy task, but this is my job. This is what I chose to do."