14:00 CET - Good afternoon and welcome to our live coverage of a blockbuster day of tennis at the Cincinnati Open!
All eight of the men's and women's fourth-round clashes take place over the course of the day, with play getting started at 17:00 CET, as defending champion Iga Swiatek takes on Diane Parry and rising star Rafael Jodar comes up against Flavio Cobolli.
Later on, both top seeds take to the court, with French Open champion Alexander Zverev facing the challenge of home favourite Tommy Paul, while women's world number one Aryna Sabalenka takes on Czechia's Sara Bejlek.
Elsewhere, Elena Rybakina, Felix Auger-Aliassime, Coco Gauff, Jessica Pegula and Taylor Fritz are also in action on a star-studded day at the prestigious Masters 1000 event.
Check out the full men's draw here and the full women's draw here.