Andy Murray labelled being named Great Britain's flag bearer at the Olympics as the "proudest moment" of his career.
The two-time Wimbledon champion will lead the team out at the opening ceremony in Rio de Janeiro on Friday.
Murray, who has won three grand slams, said he was thrilled to be given the chance.
"It is by far the proudest moment of my professional career," he said.
"I never ever thought I would be getting the opportunity to do this. I am just really proud. I am obviously looking forward to it.
"To represent your country in the Olympic Games is obviously a huge moment in anyone's career and I will remember it for the rest of my life."
As for on-court matters, Murray has been drawn to face Serbian Viktor Troicki in the first round in the men's singles.
The 29-year-old said he would make sure his performance was unaffected by carrying the flag.
"I am not playing until Sunday, which is good. It's up to me to make sure that I do everything properly," Murray said.
"On Saturday I will rest during the day. I have not gone through all the details of what I have to do tomorrow [Friday] but we will chat about that tonight and make a good plan so there is no impact on my performance.
"But I see it as a huge positive. It's the proudest moment of my career, it's inspiring to be able to do something like that.
"So it's going to help me over the next nine or 10 days."