Iga Swiatek and Jessica Pegula are undefeated after their first two group matches at the WTA Finals — can Aryna Sabalenka hold on to World No.1 or will the ‘lady in red’ spoil her party? Holger Rune is still alive in Paris as he attempts to fend off the challengers to his eighth spot in the ATP Finals, but in-form Pole Hubert Hurkacz is breathing down his neck, and AusOpen.com’s Matt Trollope catches up with Mark Philippoussis to relive his remarkable upset of Pete Sampras at AO 1996.