The fans at the French Open were less than impressed when Carlos Alcaraz was forced to forfeit a key service game after what appeared to be an attack of cramp against Novak Djokovic in their huge semi-final on Friday afternoon. As he blasted a forehand into the net to give Djokovic a service hold to draw level at 1-1 in the third set, the world No. 1 and top seed suddenly suffered a big problem with some serious pain in his right leg.