Third seed Rafael Nadal swept to an easy 6-2, 6-2, 6-2 win over Joao Sousa of Portugal.
Novak Djokovic did his part to set up a blockbuster quarter-final clash with Roger Federer at the US Open on Monday with a 6-3, 6-4, 6-3 victory over unseeded Joao Sousa.
The unseeded Sousa defeated fifth seed Julien Benneteau of France 2-6, 7-5, 6-4 in the final.
The unseeded Portuguese beat Ferrer 6-2, 7-6 to clinch his first ever victory over a top five player.
Murray downed the 100th-ranked Sousa 6-2, 6-2, 6-4 in 1hr 41min on Hisense Arena in scorching temperatures.