Nick Kyrgios reached the quarter-finals of the Japan Open after beating Roberto Bautista on Thursday.
The unseeded Australian beat Spain's Bautista 6-4, 6-2 in under an hour.
In other results, Croatian sixth seed Marin Cilic had little trouble beating America's Steve Johnson 6-3, 6-3.
Austin Krajicek of America took two hours and 12 minutes to eventually get past Portugal's Joao Sousa 2-6, 6-4, 6-3.
In the last singles match of the day, France's Benoit Paire won a three set encounter against Marcos Baghdatis of Cyprus 6-3, 2-6, 7-5.