Will Aryna Sabalenka repeat as champion? What can we expect from Coco Gauff, Iga Swiatek and Jessica Pegula after earlier-than-expected losses in Canada? We break down their paths and highlight notable first-round matchups.

World No. 1 Aryna Sabalenka needed more than three hours to overcome 30th seed Emma Raducanu 7-6 (3), 4-6, 7-6 (5) and reach the fourth round of the Cincinnati Open. The Belarusian won 51 of 65 points on her first serve, finishing one of the longest matches of her career at three hours and nine minutes.

World No. 1 Aryna Sabalenka of Belarus needed three hours and nine minutes to vanquish 30th seed Emma Raducanu 7-6 (3), 4-6, 7-6 (5) to advance to the fourth round of the Cincinnati Open on Monday in Mason,