Andy goes on to face Frenchman Adrian Mannarino in round two on Thursday
Britain's Andy Murray won a thrilling match against Australian Nick Kyrgios to reach the second round at the US Open in New York.
Murray came through 7-5 6-3 4-6 6-1 against the brilliant but unpredictable 20-year-old.
Andy goes on to face Frenchman Adrian Mannarino in round two on Thursday.
"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."
Elsewhere, second seed Roger Federer raced past Argentina's Leonardo Mayer in 77 minutes to reach the second round of the US Open at Flushing Meadows
Britain's Jo Konta took her winning streak to 14 matches after beating American Louisa Chirico 6-3 6-0 to make it through to the second round of the US Open. Jo will next play Spanish ninth seed Garbine Muguruza
British number two player Aljaz Bedene will play American Donald Young in round two after his first round opponent Ernests Gulbis was forced to retire injured
Victoria Azarenka from Belarus overcame Lucie Hradecka 6-1 6-2 in the first round
There was disappointment for Britain's Laura Robson however as she let slip a 4-0 second set lead to lose in three sets to Russia's Elena Vesnina. Robson's last victory at a Grand Slam was in 2013, since when she missed 18 months with a serious wrist injury