Roger Federer v Mannarino takes place in the U.S. Open 2013 tennis tournament on Saturday in the night session in which Federer is big favorite to win through to the second week of the Grand Slam tournament.

The match will start some time from 10 p.m. ET and can be watched online through free live stream via the link provided below.

Federer has breezed through the first two rounds of the tournament so far and has sent a clear message to the rest of the players that he is back to his best form and will take some stopping this year.

Federer's display in his 6-3, 6-2, 6-1 win against Argentine Carlos Berlocq was near perfect, and the Swiss player never looked in trouble. The performance would have shown other players at the tournament that even though Federer has not won a Grand Slam for a while, he is in blistering form, and players will be ill-advised to take him lightly.

It was a classic Federer performance, with all the grace and exquisite stroke play that has gained him millions of fans and admirers the world over.

It seems that Federer has come into the tournament this year with something to prove again – something that he hasn't had to do for some time. However, for the first time since 2002, the 32-year-old entered the U.S. Open tennis tournament ranked outside the top 5 seeds.

He has fallen down the rankings after disappointing form over the past season.

However, everyone still knows how good Federer can be on his day, and the lack of pressure on Federer this year being ranked so low may serve him well and allow him to let go and play freely – a terrifying thought for opponents.

 Roger Federer v Mannarino in the U.S. Open 2013 tennis tournament can be watched online through free live stream by clicking here.