page_title: Club Atlético San Isidro
section_title: Rugby union
hierarchical_section_title: Club Atlético San Isidro / History / Rugby union
caption_attribution_description: English: Rugby team of C.A. San Isidro, posing with a puma (South American jaguar).
context_page_description: The Club Atlético de San Isidro is an Argentine sports club based in the city of San Isidro in Greater Buenos Aires. Originally established as a football club, San Isidro has gained recognition for its rugby union team, holding a record of 33 Torneo de la URBA championships. The senior squad currently competes at Top 12, the top division of the Unión de Rugby de Buenos Aires league system.
  San Isidro has also a notable past in football, with 28 consecutive seasons playing in Primera División, the top division of Argentine football league system until the club disaffiliated from the Association when the sport became professional in Argentina. Until then, San Isidro had achieved some international titles such as three Copa de Competencia Jockey Club, one Copa de Honor Municipalidad de Buenos Aires and one international Tie Cup. Nowadays, football is practised at the institution with youth and senior amateur competitions for men and women.
  The field hockey section has women's and men's team competing at Metropolitano championships organised by the Buenos Aires Hockey Association.
context_section_description: The first rugby team of San Isidro was formed in 1908, 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. San Isidro won its first title in 1917, setting a record of 13 consecutive championships won (until 1930).
  In 1935 the club held the traditional meeting with the rival team after a match, where no women attended. During the dinner, one of the guests spilled a cup of wine over his pants, which he took off and continued eating. The rest of the players that were sat at the table showed their solidarity with him and also took their pants and continued with the dinner as if nothing had happened.
  This was seen by a member of the club who related the incident to club's authorities. As a result, eleven players were suspended by CASI for periods from one to two years. Since the suspension was effective, the team lost the most games played, finishing 6th at the end of the season (Atlético del Rosario was the champion).
  At the end of 1935 Julio Urien was elected president of CASI for a new period, therefore the banned players left the club to found their own institution, which they called San Isidro Club (mostly known for its acronym "SIC" within rugby community). Since then, both clubs developed a strong rivalry which has remained to date.
  San Isidro has won 33 URBA titles and one Nacional de Clubes to date, becoming the most winning rugby union club of Argentina. Within rugby community, San Isidro is mostly known for its acronym "CASI" instead of full name.
caption: San Isidro team posing with a puma, mascot of the team in 1918
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