The world’s fastest man Usain Bolt believes that his last Olympic goal will be achieved in Rio and he will become the first man to break 19 seconds for the 200 metres. He thinks that he will retire from track and field with the scandal-tainted sport heading in the right direction as he prepares for his final Olympic campaign in Rio.

Bolt laughed at the press conference and danced semi-naked samba dancers. The Jamaican sprint star declared he was ready to launch his bid for a “Treble-Treble”.

Before that he will attempt to win the 100m, 200m and 4x100m relay Olympic titles for a third straight Games in Rio. “This is the last one for sure. “I’ve done enough. I’ve proven myself over and over again, this is the last one,” Bolt said.

Track and field’s biggest star is preparing to retire from the sport as it battles with the fall-out from the Russian drugs scandal and corruption allegations against the former leadership of the International Association of Athletics Federations (IAAF).

“For me, I think we’re going in the right direction, I must say. We’re weeding out the bad ones. I personally think we’re on the right track. We have to go through the rough time to get to the good times. And in a few years’ time, the sport will be cleaner and everything will be great. I look forward to that,” he said.

Although the Russian doping scandal exposed the sophisticated lengths that drug cheats were prepared to go to avoid detection, Bolt said he was unconcerned about the possibility that he might be lining up against rivals in Rio who aren’t clean.

“In life nothing is guaranteed. But for me going out there, I never worry about it. That’s WADA and IAAF and IOC these are the guys that worry about that stuff,” Bolt said.

“For me, I go out there to compete and wow the crowd and entertain. I just want to compete. I personally feel the sport is going in the right direction and in a few years it’s going to be fine. I don’t worry about that,” he added.