Top seed Andy Murray cruised past Spain's David Ferrer 6-2, 6-3 on Saturday and Bulgaria's Grigor Dimitrov received a walkover into the China Open final after Milos Raonic withdrew due to an ankle injury.
The big-serving Raonic was forced to play twice on Friday, beating Tunisia's Malek Jaziri and Pablo Carreno Busta to advance to the last four and he sustained the injury during the win over the Spaniard.
"Yesterday during my second match in the evening, I rolled over my ankle, obviously caused it some level of a sprain," the Canadian told the ATP website.
"I did a test this morning, which showed I had a partial tear on the outside of my ankle. I was told to give it a try. I tried to warm up just before the match like I would normally, and I was unable to play."
Murray, through to the China Open final for the first time, has enjoyed one of the best years of his career, winning Wimbledon and the Olympic gold medal.
World number one Novak Djokovic pulled out of the tournament due to injury.
Image: Britain's Andy Murray plays David Ferrer of Spain
Photograph: Thomas Peter/Reuters