The Estadio del Club Atlético San Isidro (officially Cancha No. 1 de Rugby), nicknamed La Catedral, is a rugby union stadium in downtown San Isidro in the homonymous partido of Greater Buenos Aires, Argentina. It is owned and operated by Club Atlético San Isidro being the home venue to the club's rugby senior team.

The stadium, with capacity for 4,500 spectactors,Súper Rugby Américas: los estadios de todos los equipos on espn.com.ar. 12 Feb 2025 has been the venue for the URBA Top 12 finals since 2008 under the playoffs system established by the Unión de Rugby de Buenos Aires in 1998.El torneo de la URBA da un abrupto giro a partir de 2017 , La Nación, 20 May 2016 For matches of this kind, temporary tubular stands are added, increasing its capacity to 10,000.El Super Rugby se jugaría en el CASI on espn.com.ar. 7 Nov 2015

CASI's is one of the oldest sports venues in Argentina so the club has always been on the same site since 1902, when Manuel Aguirre, owner of a large chacra on Sánez Peña street,Guía de Instituciones Afiliadas 1923. Asociación Amateurs de Football. at biblioteca.afa.org.arPlanillas de Afiliación 1927. AAmF at biblioteca.afa.org.ar gave the club a portion to settle down there."San Isidro" at viejosestadios blogsite. 29 May 2017

History As CASI was founded in October 1902 as a football club,Historia at casi.org.ar the institution soon affiliated to the Argentine Football Association (AFA) debuting the Segunda División tournament in 1903."Argentina – Second Level 1903" at RSSSF San Isidro played their home matches in the venue, which was built on a land ceded by neighbor Manuel Aguirre, owner of a large chacra on Sánez Peña street, where the club settled down.

In 1908, C.A. San Isidro formed its first rugby team, combining British-origin employees of the Central Argentine Railway and a few Argentine-born, but it was dissolved in 1911 without having participated in any competition. Six years later, and due to an initiative by club president Rafael Cullen, San Isidro established a new rugby team, registering with the River Plate Rugby Union that same year. Besides, the stadium became CASI's home venue for rugby as well.Historia del Rugby Argentino (1917–30) by Hugo Mackern (1986)

CASI expanded its stadium in 1912, when the club placed a roof stand,Memoria y Balance 1922. Asociación Amateurs de Football at Biblioteca AFA which had been bought to Club Banco Nación. which field was in the neighborhood of Colegiales, Buenos Aires. Defunct club Alumni played there in 1909. That same year, the stadium held its first notable match, the 1912 Copa de Competencia Jockey Club final, contested by San Isidro and Quilmes. As the match ended 0–0 (after extra time), the playoff was held in Estadio Guido y Sarmiento, Quilmes' venue.Copa de Competencia "Jockey Club" 1912 by Osvaldo Gorgazzi at RSSSF"Argentina: Copa Competencia 1ra. División 1912" by José Carluccio, 29 Nov 2008 It was the only CASI's final played there so the team played their other finals (such as Rioplatense Tie Cup finals of 1911, 1912, and 1913) at Estadio Racing Club in Avellaneda.Cup Tie Competition - First Division at the RSSSF

The stadium was CASI's home venue during the club's years in Primera División (since its debut in 1906Argentina - Domestic Championship 1906 at the RSSSF to its last season in 1930). When CASI disaffiliated from the associationMemoria y Balance General de 1931 – Asociación Argentina de Football, p. 8 at biblioteca.afa.org.ar in May 1931 after football became a professional sport in Argentina,93 años de profesionalismo: el día que el fútbol argentino cambió para siempre at tnt.com.ar. 9 May 2024 the stadium finished its tenure as football venue, at least for official matches so the practise of the sport was never abandoned by the institution.Fútbol - Mayores at casi.org.ar

The wooden grandstand was destroyed by fire in 1927, being replaced by a concrete structure.

In 1998, the stadium hosted the Nacional de Clubes final where San Cirano and San Luis drew 22–22, both crowning champions.Historia at clubsancirano.com.ar La Catedral hosted its second final in June 2017, when Hindú defeated Tala 20–10 to win their third consecutive national title.Tricampeón: Hindú le ganó a Tala y se consagró otra vez at La Nación. 29 Jul 2017

The stadium hosted its first Torneo de la URBA final in 2008, when Hindú defeated Newman 22–10 to win their 5th. league title. Since then, Estadio del CASI has been a frequent venue for URBA finals.

In 2015, CASI announced its stadium would serve as home venue to Super Rugby Argentine franchise (later revealed to be Jaguares) after an agreement with the UAR, owner of the franchise. The deal would be into force from the 2016 to the 2020 season. The club also stated that the stadium's capacity could be increased (adding tubular structures) to 10,000 spectators during the competition.CASI, la sede del Super Rugby at aplenorugby.com.ar. 5 Nov 2015El Super Rugby se jugaría en el CASI on espn.com.ar. 7 Nov 2015 Despite the announcement, Jaguares played their home games at Vélez Sarsfield's venue, José Amalfitani Stadium,Apretada derrota de Los Jaguares frente a los Chiefs en Vélez at diariojornada.com.ar. 19 Mar 2016 during the five years they participated in the competition.

Since 2023, CASI Stadium has been the home venue to Super Rugby Americas franchise Pampas XV, which debuted in the tournament that same year.Comienza el Súper Rugby Américas at world.rugby. 17 Feb 2023

Nickname The stadium is nicknamed La Catedral ("the Cathedral of rugby"),Estadio del CASI by Adrián Redi at estadiosdeargentina.com.ar, 11 Jan 2014 earned due to it is distant 500 mts from the San Isidro Cathedral,CASI-SIC, el superclásico del rugby argentino on Deportea. 15 Oct 2024 a historic landmark since 1963.Historia y Arquitectura at catedraldesanisidro.orgCatedral de San Isidro Labrador (solar) at argentina.gob.arMONUMENTOS Y LUGARES HISTORICOS NACIONALES - Decreto 9.226/63

Facilities The stadium has a lighting system for night matches

References