The quarter-finals of the Flushing Meadows at US Open will see four American representatives with Madison Keys, Coco Vandeweghe, Sloane Stephens, and Venus Williams all qualify for the last eight.
Keys, seeded 15th, won 7-6 1-6 6-4, over Elina Svitolina ending the Ukrainian hopes of becoming world number one who needed to at least reach the semis to have a chance of topping the rankings.
Keys will take on Estonia Kaia Kanepi who defeated Russia’s Daria Kasatkina 6-4 6-4 in the last eight.
Venus Wiliams, the only grand slam champion left in the tournament beat Spaniard Suarez Navarro 6-3 3-6 6-3 to set up a quarter-final fixture against Czech 13th seed Petra Kvitova who sent out favorite Gabine Muguruza of Spain 7-6 6-3.
Number one seed Karolina Pliskova secured her place as well with an easy 6-1 6-0 win over America’s Jennifer Brady. Pliskova will next face 20th seed American Coco Vandeweghe, who beat 2015 French Open finalist Lucie Safarova 6-4 7-6.
Sloane Stephens will take on Anastasija Sevastova in the last quarter-final pairing.
Stephens defeated German tennis player Julia Görges 6-3 3-6 6-1 while Anastasija Sevastova came from a set down to beat Maria Sharapova 5-7 6-4 6-2.