Hours after winning his fourth Olympic gold medal, Team GB's Bradley Wiggins set his sights on earning his fifth.
The 32-year-old, who was crowned as Britain's first ever winner of the Tour de France last month, won the men's time trial at London 2012 by a margin of 42 seconds yesterday.
He said: "It had to be gold or nothing. What's the point of seven medals if they're not the right colour?
"Mainly it's about the four golds. Now I have to go to Rio [in 2016] and go for five."
The 2016 Games will be held in South America for the first time in Olympic history.
