Andy Murray has admitted that he is expecting an "extremely tough match" when he takes on world number one Novak Djokovic in the semi-finals of the Shanghai Masters.
The British number one, who moved up to second in the world rankings this week, defeated Tomas Berdych in straight sets to secure his place in the last four.
Having lost the 2012 final in Shanghai to the Serb, Murray told Sky Sports News: "It'll be an extremely tough match. We played great tennis in the 2012 final, but I feel like we are quite different players since then. I feel both of us have progressed and play different tennis. We are now quite aggressive."
Former world number one Rafael Nadal and France's Jo-Wilfried Tsonga will contest the other last-four match ahead of Sunday's final.
