Roger Federer has admitted that he is unlikely to win gold at the Olympics next year in Rio de Janeiro but believes that he still has "an outside chance".

With a trophy cabinet boasting 17 Grand Slam titles and six ATP Finals victories, the 34-year-old Swiss is the most successful male tennis player in history but has never bested a silver singles medal at the Olympics, achieved in London in 2012.

"I think my best chance was in 2004 to be honest, because that was the year I won three Grand Slams," Federer told BBC Sportshour.

"I was world number one. I was number one seed. I think I was playing great before and after and unfortunately couldn't make it then."

Federer did manage to achieve Olympics gold in the men's doubles in Beijing in 2008, but the number three seed now has his sights set on a final bid for a singles triumph next year.

"I've definitely got an outside chance," he added. "I've got to really make sure my game's up to speed when the Olympics roll around."

In the 2015 season, Federer advanced to the finals at Wimbledon, the US Open and the ATP Finals but was defeated by world number one Novak Djokovic on all three occasions.