NEW YORK (Reuters) -British teenager Emma Raducanu produced yet another exquisite performance to become the first qualifier to reach the U.S. Open semi-finals on Wednesday, defeating Olympic champion Belinda Bencic 6-3 6-4 on Arthur Ashe Stadium.

Down an early break, the Briton recovered swiftly to win four straight games to close out the first set in which she had seven forehand winners and three aces.