10:30 CET - Good morning and welcome back to the Tennis Tracker this Thursday!
The main action comes from Riyadh at 15:00 CET, as the round-robin stage finally comes to an end at the WTA Finals. Jessica Pegula takes on Jasmine Paolini before Aryna Sabalenka faces Coco Gauff, and with not a single player having qualified out of the group yet, there is plenty to play for.
Over in Athens, the top two seeds, Novak Djokovic and Lorenzo Musetti, are in action later this afternoon, while Matteo Berrettini and Cameron Norrie headline proceedings in Metz.