It is a storied rivalry, dating back 14 years and the pair have 38 major titles between them. Roger Federer and Rafael Nadal have gone up against each other 13 times in the past at grand slams and will do so again for a 14th time at Wimbledon in the semi-finals on Friday. Starting at the French Open in 2005, the two greats have pushed each other to the limits, with their most recent clash being at Roland Garros in June when Nadal prevailed in straight sets. Friday will be the first time in 11 years that the duo have faced off at Wimbledon, with that occasion being for the title. That remains arguably the greatest tussle between them. A match full of drama, tension and outstanding tennis. The stakes were high. Federer was going for a sixth Wimbledon win in a row. Nadal for his major crown away from the clay of Paris. Nadal, who had lost to Federer in the final the previous two years, raced into a two-set lead. But Federer hit back with two tie-break successes to set up a final set decider. A rain break interrupted things and it was near dark when Nadal finally prevailed to win 6-4, 6-4, 6-7, 6-7, 9-7. You can check out in the gallery above a look back at the history of their meetings at grand slams and where each encounter ranks in our list. To move on to the next photo, click on the arrows, or if using a mobile device, simply swipe.