Britain's Andy Murray wants to reach his third Wimbledon final when he takes on seven-time champion Roger Federer in Friday's second semi-final.
They have played each other 23 times and their head-to-head record is very close, they also have two of the highest IQs in the game.
How do they compare now? Here are the facts:
Total Wimbledon Wins: 1
Andy became the first British man in 77 years to be crowned Wimbledon champion, is in his sixth All England Club semi-final and 17th at the majors.
Wimbledon finals reached: 6
Total Grandslam Wins: 2
Support: 3.15 million followers on Twitter and, of course, is playing to his home crowd!
Total Wimbledon Wins: 7
Federer, 33, is bidding to become the oldest champion of the Open Era at Wimbledon and the first to win eight titles.
Wimbledon finals reached: 10
Total Grandslam Wins: 17
Support: Roger has 3.08 million followers on Twitter and is admired because of his impressive winning record.