In the 1937 season of the Campeonato Carioca, the last under the split between FBF and CBD, two championships were disputed, each by a different league.
The edition of the Campeonato Carioca organized by FMD (Federação Metropolitana de Desportos, or Metropolitan Sports Federation) kicked off on May 2, 1937 and ended on July 11, 1937.
[1][2] The tournament would be disputed in three stages, on the same format as in the previous year:[2][1][3] However, in 17 of July, with only two matches left to be played in the first round, the chairmen of América, Pedro Magalhães Correa, and Vasco da Gama, Pedro Novaes, put forward a proposal for not only the reconciliation of FMD and LCF, but FBF and CBD, which was accepted by both leagues' clubs two days later.
At the time, São Cristóvão led the first round and no other teams could reach it, even with the matches that still hadn't been held.
no teams were relegated, although Olaria, Andarahy and Portuguesa weren't invited back for 1938's championship.