(Reuters) - Here's a look at the form and previous records of Switzerland's Roger Federer and Czech Tomas Berdych ahead of their semi-final match at Wimbledon on Friday (prefix number denotes seeding):
3-Roger Federer (Switzerland)
The 35-year-old Swiss, who won the Australian Open earlier this year, maintained his stellar form at grand slam events and is yet to lose a set at this year's Wimbledon.
Federer was rusty upon his return to the grass in Stuttgart but hit his stride in Halle, where he claimed his ninth title without dropping a set.
He beat Canadian Milos Raonic to reach the final four at Wimbledon for the 12th time in his career.
11-Tomas Berdych (Czech Republic)
Berdych has struggled for form this season but has turned a corner at Wimbledon, reaching the final four for the second consecutive year.
With top contenders Novak Djokovic, Andy Murray and Rafael Nadal out of the competition, Berdych may not have a better opportunity to lift his first grand slam title.
Berdych, a 2010 finalist, reached the semi-final after his opponent Novak Djokovic retired with an elbow injury.
Compiled by Hardik Vyas in Bengaluru