Venus Williams proved too strong for Petra Kvitova in a final-set tie-break in a thrilling US Open quarter-final in New York.
The 37-year-old American reached the 23rd major semi-final of her career with a 6-3 3-6 7-6 (7-2) victory.
Williams, seeded ninth, came back from 3-1 down in the final set to win in two hours and 34 minutes.
She will next face Sloane Stephens, with an all-American semi-final line-up possible.
Madison Keys and Coco Vandeweghe will try to join their compatriots in the last four when they play their quarter-finals on Wednesday.
More to follow.