Fourth-seeded Andrey Rublev eased past American Marcos Giron, 7-6 (1), 6-3, after 79 minutes, while countryman Karen Khachanov upstaged 2015 champion Stan Wawrinka, 6-4, 7-5, on Tuesday at the ABN AMRO World Tennis Tournament.

The Spaniard beat Egor Gerasimov in straight sets in his first-round match on Monday.