British teenager Emma Raducanu completed the greatest underdog title triumph in tennis history on Saturday, becoming the first qualifier to capture a Grand Slam title with a straight-sets defeat of Canada's Leylah Fernandez in the US Open women's final.Raducanu, 18, was the first British woman in 44 years to win a Slam crown after beating 73rd-ranked 19-year-old left-hander Fernandez 6-4, 6-3 to take the $2.5 million (2.1 million euro) top prize.

British teenager Emma Raducanu completed the greatest underdog title triumph in tennis history on Saturday, becoming the first qualifier to capture a Grand Slam title with a straight-sets defeat of Canada's Leylah Fernandez in the US Open women's final.Raducanu, 18, was the first British woman in 44 years to win a Slam crown after beating 73rd-ranked 19-year-old left-hander Fernandez 6-4, 6-3 to take the $2.5 million (2.1 million euro) top prize.