Andy Murray has claimed that he is happy with the form he showed during his second-round win over Ivan Dodig in the US Open.

The British number one outclassed his opponent in New York to book his place in round three of the tournament and admits that he was pleased with his performance.

Murray said: "I thought I played well.

"There were a lot of long rallies. I moved my feet pretty well. They were definitely easier conditions to play in, compared with the other day when it was windy."

However, the Scot admits that he must adjust to playing during the day later on in the competition after continuing his good record in night matches.

"I served better. I've got a couple of days to work on some things and I've got to get used to playing in the day, so I'll get out there in the heat," he added.

Murray will face Pablo Andujar or Feliciano Lopez in the fourth round.