Pakistan, Aug. 13 -- World number one Aryna Sabalenka kept her Cincinnati Open title defence alive by claiming a 7-6(3) 4-6 7-6(5) victory over Emma Raducanu in a marathon third-round clash on Monday, while men's top seed Jannik Sinner overcame Canadian Gabriel Diallo.

Fresh off their third-round clash at Wimbledon last month, Sabalenka and Raducanu produced another epic contest, featuring a 13-deuce game in the third set, before the 27-year-old Belarusian sealed victory in three hours and nine minutes.

Sabalenka relied on her trademark powerful serve to hold firm in the key moments, winning two tiebreaks to take her tally to 18 for the season, the most by any women's singles player in the professional era.

Despite the defeat, Raducanu...