Eugenie Bouchard beat an injury-hit Angelique Kerber to reach the quarter-finals of the Madrid Open on Wednesday.
Following her impressive win over Maria Sharapova in the previous round, Bouchard led Kerber 6-3 5-0 before the world No 2 withdrew due to a thigh injury.
Kerber had broken her opponent in the opening game of the match but soon after appeared to be ailing as the Canadian took full control.
Bouchard responded by breaking Kerber four times to take the first set, and the 23-year-old continued her dominance in the second set with her opponent clearly wilting.
The win for Bouchard means she will face Svetlana Kuznetsova in the last eight, after the Russian eighth seed beat Qiang Wang of China 6-4 7-5.
Also through to the quarter-finals is third seed Simona Halep, who fought off tough opposition in Sam Stosur to win 6-4 4-6 6-4.
The Romanian will next play American Coco Vandeweghe who needed almost two and a half hours to see off Spain's Carla Suarez Navarro 5-7 6-4 7-5.
Meanwhile, Kristina Mladenovic will play Sorana Cirstea in the last eight after wins over Oceane Dodin and Misaki Doi respectively.
Kiki Bertens and Anastasija Sevastova complete the quarter-final line-up after wins over Irina-Camelia Begu and Lara Arruabarrena.
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