Usain Bolt has insisted that he will defend his three Olympic titles at the 2016 Rio de Janeiro Games.
The Jamaican sprinter became the first man to win back-to-back 100m and 200m titles at London 2012, while he also added a third medal as part of the 4x100m relay team.
Reports had suggested that Bolt may bow out while on top but he is adamant that he is capable of defending his titles again in Brazil.
He told the Jonathan Ross show: "I definitely think so, if I pace myself. My coach says as long as I stay fit and focus I'll be on top of the world until I retire.
"Sometimes I sit down and think 'I'm actually the fastest man in the world. I can beat you, I can beat you, I can definitely beat you.'"
When Ross asked if he was worried if he would ever be beaten, Bolt replied: "I'm not worried."
In the same interview, Bolt sensationally claimed that he could play for Manchester United.