After being minor premiers in 1913, they lost the Grand Final to Ferntree Gully, but bounced back to win the flags in 1914 and 1915.
In the final season of the Reporter competition in 1926 Mitcham only just avoided another wooden spoon, finishing one game ahead of Doncaster.
Mitcham decided to again compete as a senior club in 1928 and joined the Ringwood District F.A., where they remained until 1937.
They lost the 1929 Grand Final, having future South Melbourne champion Bob Pratt in their team, to Doncaster and were again finalists in 1930 before tumbling down the ladder in 1931.
In 1932 the club merged with struggling neighbour Vermont to form Mitcham-Vermont and the combined team finished third.
In 1946 Mitcham finished minor premiers but lost the Grand Final to Box Hill and also fielded their first 2nd Eighteen (Reserve) Grade team which formed that year.
The Croydon-Ferntree Gully FL changed its name to the Eastern District Football League in 1962.