in PRAC field. Hockey continued developing in Argentina, increasing the number of teams taking part of the league. By 1911 this was the most popular sport of the club. Consolidation through rugby Rugby union was incorporated to Pacific in 1922, which affiliated to River Plate Rugby Union one year later to play at the second division. The club played its first match against Club Universitario de Buenos Aires (CUBA), being the first of some friendly matches prior the beginning of the official tournament. In 1925 Pacific debuted at Primera División facing Buenos Aires Football Club. The team made a good performance in the tournament, finishing 4th. By 1921 football had been abandoned by Pacific and it would not be reintroduced anymore. On the other hand, the practise of tennis gained followers amongsts club's members. At the beginning of 1930, the sports practised at the club were field hockey, cricket, tennis and rugby. Pacific won its first hockey championship in 1929, obtaining a new title one year later. In 1931 the team achieved a notable victory over Club Atlético San Isidro, defeating it 8–0. The women's team also won titles for the club, obtaining the 1932, 1935 and 1936 championship, being nicknamed "Las Imbatibles" ("The Unbeaten"). In rugby, Pacific played against British & Irish Lions, who were touring on Argentina for the first time, in 1936. The Lions won 62–0. At the end of the 1930s, Pacific had more than 600 members, forcing the club to put a limit, restricting new memberships to avoid exceeding its capacity. In 1943, Pacific rugby team promoted to Primera División, after beating Sportivo Francés (now Asociación Deportiva Francesa) in the final match. The club lasted only one season in Primera, being relegated again in 1944. Club San Martín rises On 13 February 1947, the railway lines were bought by the Government of Argentina to the British companies. As a result of the nationalisation, Pacific changed its name to "Club Ferrocarril San Martín" (the name given by the Government to former Buenos Aires and Pacific Railway, now a state-owned line). In 1949 "San Martín" returned to the first division of rugby. During the 1950 there was a revival of cricket, sport which was usually practised during Summer, when the rugby seasons finished. After spending some seasons at second division, in 1962 San Martín rugby team won a new championship promoting to primera, after an 8–8 draw