Britain's Andy Murray will attempt to reach his third Wimbledon final when he plays Tomas Berdych on Friday.
Murray, 29, is bidding for a second Wimbledon and third Grand Slam title, while his Czech rival was runner-up at Wimbledon in 2010.
In the other semi-final, seven-time champion Roger Federer will take on Canada's sixth seed Milos Raonic.
Federer is aiming to win his 18th Grand Slam title and first since beating Murray in the Wimbledon final in 2012.
Federer and Raonic open play on Centre Court at 13:00 BST with Murray and Berdych's match following.