Rafael Nadal’s semi-final victory over Roger Federer at the French Open was the 22nd consecutive match that he’s won at Roland-Garros which is a testament to how tough it is to face the Spaniard on clay. Later today, Dominic Thiem has the task of facing Nadal in the French Open final, a match which the Spaniard has won 11 times since 2005. Beating Nadal on clay is one of the most difficult challenges on sport, and that is what Thiem must do if he wants to be crowned as the French Open champion. We’ve taken a look at some other sporting challenges which could stack up with facing Nadal on clay in terms of their difficulty.