David Cameron hailed Andy Murray's US Grand Slam win a "truly great victory" that continued the golden summer of sport.
The Prime Minister took to micro-blogging site Twitter to lead congratulations over the Scottish tennis player's historic win.
Murray became the first British man to take a tennis Grand Slam in 76 years after beating Novak Djokovic in a gruelling five-set final in New York.
Mr Cameron tweeted: "Delighted Andy Murray is continuing a golden summer of sport by winning the US Open. A truly great victory."