other in several things. The court The court used in frontenis is a pelota court of the Very Short type — 30 meters long, 10 meters wide and 10 meters high. Its walls must have signs to establish the distances of service, and to help the player to situate itself in the court. There are several parts that form the court: Front wall (frontis) This is the wall at the front of the court faced by the players. Every ball hit by a player must strike this wall before touching the ground to be valid. The front wall measures 10 meters wide by 10 meters high. The lower 60 centimeters of this wall is not a legally playable surface. The upper limit of this non-playable surface is covered with a 10-centimeter-wide metallic sheet (chapa in Spanish, txapa in Basque) that audibly indicates an impact on the upper part of the non-playable surface. Left wall or help wall The wall is to the players' left as they face the front wall. It is marked with lines every 3.5 meters, measured from the front of the court. On its upper rim is located a 10 centimeter wide metallic sheet that signals a ball striking outside of the playable area. This wall with its markings helps players situate themselves within the court. Rebound wall It is the wall situated in the back of the court. It has no markings and is the same size as the front wall. It has 10 centimeter metallic sheets on its rims to give an audible indication of a ball striking outside of the playable area. Many pelota courts lack this wall, and are therefore not used for official competitions. The racket and the strings The racquet used in frontenis is, according to Spanish Pelota Federation (SPF), “similar or equal to tennis racquets, made of wood, fiber, metal or graphite. Weight and stringing are not limited, and double strings can be used. The racquets' length and width are not limited.” Racquets have evolved considerably since the beginning of professional frontenis in 1900. Much of this evolution has paralleled standard tennis racquets At first, racquets were made of wood and the strings were made of animal gut. These were very heavy and did not provide comfortable play, but they were used for more than thirty years until the great player Jose, the “Poison” Becerra revolutionized the sport. Manufacturers that