Andy Murray and Roger Federer, as expected, have progressed into the second round of the US Open, after defeating Nick Kyrgios and Leonardo Mayer respectively in their first round matches at the Arthur Ashe stadium in New York.

All eyes were on Murray, as he was handed a tricky first round clash against Australian Nick Kyrgios, who had grabbed headlines recently for his remarks on Stan Wawrinka's girlfriend. But, it was Andy Murray, who did all the talking during the match, playing some incredible shots from the baseline.

But make no mistake, Kyrgios looked good in phases, especially in the second set, after a close first set was taken by the Brit. Murray defeated Kyrgios with the score reading 7-5, 6-3, 4-6, 6-1.

"It was tough and I had to do a lot of running in very humid conditions," said Murray. "I'm getting old now - 28 years old. I need to get in the ice bath and cool off a bit."

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The Scot felt it was a tricky match overall against Krygios.

"He's unpredictable," said Murray. "He can play all of the shots, he serves extremely well, he's a fantastic athlete, a big guy, covers the court extremely well. It's tough to get the ball out of his strike zone.

"It was a very tricky match and I just fought hard, mixed it up and managed to get through."

Murray needs to keep this momentum for the rest of the tournament as he is one of the favourites to win the US Open, which he last won in 2012.

Talking about favourites, Federer, who is looking for his sixth US Open title, looked in no discomfort whatsoever, as he brushed aside his first round opponent Mayer in straight sets, 6-1, 6-2, 6-2. The lanky Argentine was no match for Federer either from the baseline or at the net.

Federer has come into the US Open with full confidence, after his terrific win over Djokovic in the final of the Cincinnati Masters and his first round performance against the world number 34 might have already sent alarm signs to the rest of the players in the US Open field.