due to social changes in Finland as well as migration from inner city to housing projects built during the mass migration from the countryside during the 1960s and the 1970s. The Helsinki Derby and other local rivalries HJK's main rivals in Helsinki were widely considered to be Kiffen, HPS and HIFK. In the past these were the four big clubs from Helsinki. The clubs were mainly separated by language, HJK and HPS being Finnish speaking clubs whereas HIFK and KIF were Swedish speaking. These four clubs competed also in bandy, ice hockey and handball. The support for HJK mainly came from around the inner city and after 1940s also from Töölö, in its early years HPS Support came from same areas as HJK. Later in 1940s and 1950s when HJK support shifted more towards Töölö area, HPS gained more support in Vallila and Alppila districts, this was mostly due their youth activities taking part in those particular areas, these boundaries were not strict however and each of the four clubs had support, players and members across the city. HJK were already founding youth teams to new suburbs in 1960s and their reputation as a Töölöan club was short lived. KIF and HPS were both struggling to survive and were both relegated to lower leagues after 1964 season and rapidly lost their support. KIF made a brief two season stint to first level in 1977–78. While both KIF and HPS are still active as of 2020, they have spend their recent decades playing in lower levels, HPS focusing more on youth football in northern Helsinki. HJK and HIFK share the biggest rivalry being two of the oldest and most successful clubs. Both were also successful in Bandy which was major winter sport in the first half of the 20th century, KIF and HPS gained lesser success. Also in Ice Hockey clubs faced numerous times and played more seasons in first level than HPS or KIF. A match between these two clubs is called as Stadin derby. Language was the biggest separating factor between the clubs, HIFK was the club of choice for the Swedish speaking population of the city and HJK for the Finnish speaking. In 2015 HIFK was promoted back to the top flight after 40 years of struggling in the lower leagues having played their last season in the top division in 1972. Since HJK ceased their activity in