Raducanu and Fernandez’s extraordinary roads converge on final unlike any other

The last time the teenagers met they were playing in the second round of the Wimbledon girls' singles. On Saturday they will play for the US Open title

There's unexpected and there's this: a US Open final between two teenagers ranked 73rd and 150th in the world.

That's where things stand after Thursday's extraordinary women's semi-final twin bill at Arthur Ashe Stadium, the latest shocking development at the season-ending grand slam which, despite the absence of some of the sport's brightest stars, continues to unfold in the most unpredictable of ways.