Michael Phelps is the most decorated Olympian of all time and he will win the world’s most prestigious title in the final event of the Rio Olympics.

The 25-year-old swimmer and former Olympic gold medallist is in contention to become the first person to win two medals at the same Games after beating world record holder Usain Bolt in the 400m freestyle relay on Friday night.

Phelps has already clinched the medals in the men’s 400m and 800m frees and is now poised to claim gold in the 1,500m individual medley.

“I think I can do it.

It’s just a matter of getting my mind right, getting my body right, my training right,” he told reporters on the podium in the Olympic Stadium in Rio de Janeiro.

Petersen beat Bolt in Friday’s 1,000m, setting a new Olympic record of 6.07 seconds. 

The record stood for more than a decade until Usain won gold in 2012. 

“It was the best feeling ever.

It was unbelievable,” said Phelps, who finished second in the 800m in his last world title in February.”

My dad said that if you’re in that kind of situation, it’s a dream come true.”

Phelps is aiming to become only the third man in history to win both men’s and women’s gold medals in Rio.

“This is a dream that I’ve had since I was a kid,” he said.

“I’ve been dreaming about this since I could remember.”

The gold-medal final was overshadowed by a record-breaking rainfall that hit the Games site on Thursday.

Phelps was in the middle of a practice run when the rainfall started to surge and he ran into an obstacle course at the Olympic stadium.

The storm left his swimsuit soaked and he was unable to finish the race.

The rain caused some of the biggest water breaks in history.

“That was really bad.

It didn’t rain, it just soaked us,” he added.

Bolt won the 1-800m freerunning event, with Phelps beating the world record by less than two seconds.

Powell’s record-setting run, which was overshadowed in the media by the record-shattering rainfall, will go down as one of the most memorable events of the Games.

“The rain came so quickly that it was a bit like the Olympics had come to an end,” Phelps said.

“When it rains like that, you can feel it.

I was feeling it in the pool, the swimmers were feeling it, it was just unreal.”

Pets’ legend has a big future in Rio