In Rio de Janeiro, there is a fierce rivalry between the 4 big clubs (Vasco, Flamengo, Botafogo and Fluminense). The oldest derby is Botafogo -Fluminense. Both were founders of the Rio de Janeiro league in 1906, and still today they quarrel about the 1907 title. It's known as the Classico Vovô (Grandpa derby), since it dates from way back to the 1900s.