Emma Raducanu will seek to become the first British woman to win a Grand Slam singles title in 44 years when she takes on fellow teenager Leylah Fernandez in an unlikely US Open final between two players who have lit up New York.
A final between the world numbers 150 and 73 was never predicted, nor should it even be as thrilling a prospect as it is, but this US Open - and these two players - have defied expectations at every turn.
Raducanu's story is the stuff of dreams - ranked too low to make the main draw, the 18-year-old had to come through three rounds of qualifying and has become the first qualifier to reach a major final.