Madrid ¨C Australian Open champion Elena Rybakina fell to a shock 7-6 (8), 6-4 defeat by Anastasia Potapova on Monday in the Madrid Open fourth round.
Earlier world No. 1 Aryna Sabalenka overcame Naomi Osaka 6-7 (1), 6-3, 6-2 in a gripping battle to reach the quarterfinals.
Third seed Coco Gauff was eliminated in a three-set battle with Linda Noskova, decided on a final set tie-break in an exciting fourth-round clash.
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