Beti Jai fronton by architect Joaquín Rucoba (1844-1919), author of the Plaza de toros de La Malagueta, the Mercado de Atarazanas and park in Málaga, and the City Hall of Bilbao, among other works. It was the fourth infrastructure of these open features in Madrid at the end of the 19th century, in a time when the sport of Basque pelota reached a remarkable popularity in the Spanish capital. It was preceded, in this order, the frontons Jai Alai (1891), Fiesta Alegre and Euskal Jai. It was opened on April 29 of 1894 (other sources indicate the May 29 of the same year)
Assassination of Augusto Unceta Barrenechea in 1966 and later became President of the delegation. His last official act before his death was in September 1977, when he participated in a memorial service for Juan María de Araluce Villar. He had received letters from ETA, demanding that he pay their "revolutionary tax" but refused to do so. He had also received ETA death threats and, as a result, had been granted a bodyguard of two civil guards. Unceta was fond of 'fronton', a Basque sport, which he played weekly at the Jai alai court. The attack occurred when he arrived at the court: as he was