So Venus Williams will face compatriot Sloane Stephens in the semi-final, meaning at least one American is guaranteed a place in Saturday's final.
But with Madison Keys and Coco Vandeweghe also through to the last eight, there is the prospect of an all-American semi-final line-up.
There's another men's quarter-final to come tonight, as Sam Querrey faces Kevin Anderson, but it's bed time for us.
We'll be back tomorrow from 17:00 BST for Vandeweghe against Karolina Pliskova, before the small matter of Roger Federer and Juan Martin del Potro.
We'll catch you then.