In a hugely anticipated encounter, which can be rightly called as a repeat of this year’s Wimbledon final, World No. 1 Roger Federer of Switzerland will lock horns with Andy Murray of Great Britain.

The Swiss legend asserted that he felt emotionally drained after playing a marathon semi-final encounter with eighth-seeded Argentine Juan Martin del Potro. Federer emerged victorious in the end with a Potro 3-6, 7-6(5), 19-17 scoreline in the semi-finals on Friday.

The Swiss quoted, “I'm extremely drained from serving against a match so many times, basically being down in the score for the entire match except the one time where I served for it.  The level of play throughout was amazing, especially from Juan Martin. I've never seen him play so well, to be honest, from start to finish, particularly on grass. He should be very proud of his performance.”

He further added that “I felt very bad for him at the net. It was an emotional hug we sort of gave each other. It's not over for him yet. I hope he can make the turnaround and play a good bronze medal match."

Federer also admitted that winning a gold medal at Olympics is equally satisfying just like winning a Grand Slam, "I definitely got a sense that this was something special we were both going through. The deeper we went into the match, the more I thought, 'Wow, this is so cool to be part of a match like this’. The emotions I felt were as strong as winning a Grand Slam almost."

When asked about his chances, the Swiss added "I hope I can get to gold again, and that it's going to set free some great playing on Sunday. Then we'll see if I win or not. I'm sure the emotion is going to be extreme. But we're not there yet, so have to stay very calm right now."