By Simon Cambers
The Scot was the last of the top four seeds to play in the first round but made up for lost time with a 6-3 6-2 6-2 win in one hour 51 minutes on the third day of the U.S. Open
Murray was delighted to get off the steamy court quickly in temperatures that topped 90 Fahrenheit (32 Celsius).
"It's a lot easier to play the matches in 14 days, anyone would tell you that," Murray told reporters. "I don't really know whether I like it or not.
Murray was relatively untroubled by the heat or world number 71 Lacko, fretting only once when he dropped serve early in the second set and slammed his racket against his foot in disgust.
Otherwise, it was smooth sailing for the Scot, a runner-up to Federer in New York in 2008 and also runner-up to the Swiss maestro at the Australian Open earlier this year.
"It wasn't necessarily the best tennis," he said. "But it was tricky conditions out there. It was very windy and it was a guy I've never played against but I did enough to win in straight sets, and that was the most important thing."
"I played badly after Australia but then Wimbledon gave me the confidence again," he said. "Then I came over (to the United States) and practiced hard and obviously I've had a good run in the tournaments, which definitely helps."
(Editing by Frank Pingue)