Andy Murray exhumes confidence to defend the title he won in London four years ago

Britain's Andy Murray serves the ball during a training session at the Olympic Tennis Center in Rio de Janeiro on August 2, 2016, ahead of the Rio 2016 Olympic Games. / AFP PHOTO / ROBERTO SCHMIDT

Adjusting quickly to the Olympic atmosphere and its unfamiliar environment will be key for Andy Murray as he bids to defend the title he won in London four years ago, the world number two has said.

The Scot, who beat Novak Djokovic and Roger Federer en route to gold in 2012, is representing Britain in the men's singles in Rio and will also partner his brother Jamie in the men's doubles.