Sinclair Dickson was a member of three Port Adelaide premiership teams in the
South Australian Football League. He also won the
Port Adelaide best and fairest in consecutive years in 1908 and 1909. Sinclair Dickson was runner up for the 1909
Magarey Medal. Dickson represented
South Australia on seven occasions between 1908 and 1910. Sinclair Dickson served as the treasurer of the Port Adelaide Football Club during the 1920s. In 1924 Sinclair Dickson took part in a charity match that pitted retired champions against a league eighteen of mostly current state carnival players with the former side winning. In 1928 Sinclair Dickson was made a life member of the Port Adelaide Football Club. == Outside football ==