Poland's Hurkacz, who beat Roger Federer on his way to the Wimbledon semi-finals in July, won 7-6 (7/4), 6-3.

"Andy is an unbelievable competitor, he has achieved so much throughout his career," Hurkacz said.

"He is coming back from a tough injury and playing at a very high level, so he is amazing and you can be inspired by his results."

Three-time major winner Murray was playing in his first quarter-final since winning the Antwerp title in October 2019.

The 34-year-old, who has undergone two hip surgeries in the last three years, is now down at 113 in the world.

For Hurkacz, it was a second win this year over Murray following his victory in Cincinnati last month.

The 24-year-old will next face Peter Gojowczyk after the German moved past American Marcos Giron 3-6, 6-1, 6-3.