London [UK]: Swiss tennis star Roger Federer and Spaniard Rafael Nadal progressed to the semi-finals of the ongoing Wimbledon tournament as they won their respective quarter-final matches on Wednesday.\r\n\r\nNadal defeated American Sam Querrey 7-5, 6-2, 6-2 whereas Federer outclassed Japan's Kei Nishikori 4-6, 6-1, 6-4, 6-4 to register his 100th Wimbledon win.\r\n\r\nIn the match between Nadal and Querrey, the latter came out all guns blazing in the opening set and created a lot of pressure on the Spaniard. But Nadal was able to hold on to his nerve to seal the opening set 7-5.\r\n\r\nAfter winning the first set, Nadal did not allow Querrey to gain momentum, as he ended up winning both subsequent sets to seal his semi-final berth.\r\n\r\nThe Federer-Nishikori match was one to savour as both competitors were in no mood to give each other an edge. Nishikori stunned Federer in the first set. In the opening set, Federer was able to win just four games and as a result lost the set, 4-6.\r\n\r\nAfter losing the opening set, Federer came out all guns blazing in the second set. He did not give Nishikori any chance to create momentum and as a result, the Japanese was able to win just one game. Federer sealed the second set 6-1.\r\n\r\nIn the third and fourth sets, Federer wasted no time in brushing off Nishikori's challenge and took a 6-4 lead in both sets.\r\n\r\nNadal and Federer will now lock horns in the semi-final on Friday, July 12. These two faced each other in the recently concluded French Open semi-final in which Nadal came out triumphant.