Wimbledon champion and Olympic champion Andy Murray powered into the second round of the US Open on Tuesday.
Murray went from claiming a second title at the All England club to a successful defence of his Olympic gold in Rio.
Vying to become the fourth man in the Open Era to reach all four major finals in a calendar year, Murray, produced a dominant service performance in a 6-3, 6-2, 6-2 victory over Czech Lukas Rosol.
"I don't think I had any break points against me, which is very good," the Scot said.
Juan Martin del Potro, the 2009 US Open champion whose career was nearly ended by three wrist surgeries, advanced with a 6-4, 6-4, 7-6 (7/3) victory over fellow Argentine Diego Schwartzman.
There was a little record-setting on the men's side as well, with Croatian Ivo Karlovic belting a US Open record of 61 aces in a 4-6, 7-6 (7/4), 6-7 (4/7), 7-6 (7/5), 7-5 win over Taiwan's Lu Yen-Hsun.
Karlovic, 37, beat the previous best of 49 aces for one match in New York established by Richard Krajicek in 1999.
"I knew there were a lot of aces because there was a period when almost every serve was an ace," Karlovic said.
Andy Murray Rides Strong Serves Into US Open Second Round
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Andy Murray is vying to become the fourth man in the Open Era to reach all four major finals in a calendar year at this year's US Open
Andy Murray during his first round match at the 2016 US Open.© AFP
Highlights
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Andy Murray beat Lukas Rosol in rd 1 of US Open
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Murray recently won the gold medal at Rio Olympics
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Juan Martin del Potro beat Diego Schwartzman in Rd 1