World No.1 Novak Djokovic fought back to beat Tallon Griekspoor 4-6, 7-6 (7-2), 6-4 on Thursday and reach the Paris Masters quarter finals.
Fourth seed Jannik Sinner withdrew from the tournament, citing health reasons. He was due to play Alex de Minaur, who will now face in-form Andrey Rublev, who beat qualifier Botic Van de Zandschulp 6-3, 6-3.
Seventh seed Stefanos Tsitsipas secured his spot at the ATP Finals with a 7-6 (7-2), 6-4 win over German 10th seed Alexander Zverev.
Hubert Hurkacz beat Argentine Francisco Cerundolo 6-4, 6-3. He will meet Grigor Dimitrov for a place in the semi-finals after the Bulgarian routed Alexander Bublik 6-2, 6-2.