Retired former five division world champion Floyd Mayweather Jr. has been making the rounds in Rio, as he takes in the Olympic games. There were more eyes on Mayweather than any fighter in the ring.

Mayweather is still the undisputed top attraction at the boxing tournament in what was at least his third visit to the venue. The U.S. bronze medalist at the 1996 Atlanta Games smiled when he was shown and introduced on the big screen to a roaring ovation.

Dozens of fans hurried his way for selfies. He never removed the earbuds attached to his mobile phone when he posed for a few fans. They were quickly shooed away and blocked off by members of Mayweather's friends known as TMT: The Money Team.

Mayweather invited Popo Freitas, a former Brazilian boxing world champion, down to his seat for a quick chat.

Mayweather enjoyed the fights, first from the front row of the corner of the bleacher seats, then he moved to dead center for the two American bouts.

The 39-year-old Mayweather retired last year after a 49-0 career. The International Boxing Association (AIBA) changed its rules this year to allow professionals to fight at the Olympics, but Mayweather had no interest.

His career rival Manny Pacquiao retired in April, but is already returning to the ring in November. Mayweather on the other hand ruled out a comeback.

"I'm an old man," he said, laughing. "I'm treating my body good, being smart. I was still able to compete at the top level for 20 years. I've done a lot in boxing. I just want to give back to young champions right here."