Top seed Marin Cilic booked his place in the quarter-finals of the ABN Amro World Tennis Tournament with a 6-1 2-6 6-4 victory over fellow Croatian Borna Coric in Rotterdam.
After coasting through the opening set, the world number seven found himself trailing 4-2 when broken in the second set, before then losing serve again as Coric rallied.
Any hopes of an upset, though, were ended as Cilic finally forced a breakthrough in a lengthy game seven of the deciding set and went on to close out victory in just under two hours. He will next face sixth-seeded Frenchman Jo-Wilfried Tsonga.
Third seed David Goffin is also through after the Belgian came from behind to beat Dutchman Robin Haase 5-7 6-4 6-4.
Number four seed Tomas Berdych saw off Frenchman Richard Gasquet, the Czech player winning 7-6 (7/4) 6-1.