PFC Lokomotiv Plovdiv teams are the most supported ones in the second largest city in Bulgaria. Botev is one the country's oldest teams, whereas Lokomotiv grew popular in the 70s. Traditionally, Lokomotiv drew support from the lower working classes of society whereas Botev drew support form the middle and upper classes, although that no longer applies. Another rivalry Lokomotiv Plovdiv has is with one of Bulgaria's most successful football clubs - CSKA Sofia. The rivalry has a geopolitical nuance, first because of the historical competition between the cities of Plovdiv and Sofia as cultural, political and economical centres, and second because of the
PFC Lokomotiv Plovdiv can be defined as that of "Sportclub Plovdiv" (being the fan-based team), and of club of the railway workers (being the team funded by the union). In the spring of 1922 the sport club "Karadzha" is founded administratively by the consolidation of some casual football teams in one of the districts of the city of Plovdiv so that the players can compete in the Championship of Plovdiv. Two years later, in 1924, the sport club "Atletik" is formed in the same district of Plovdiv as Karadzha. On 26 July 1926 the two sport clubs from the same district, Karadzha and