In the case of former presidents fighting their successors

IN the history of the Philippine presidency, all presidents who fought their successors ultimately lost. One might include Andres Bonifacio in the roster of these presidents, which most historians don't, but if one does, then he was the very first to have lost a fight with a successor, Emilio Aguinaldo.

Diosdado Macapagal fought his successor Ferdinand E. Marcos Sr. after the 1971 Constitution into Martial Law and lost. In many ways, including through coup attempts, the same Marcos fought his successor Corazon "Cory" Aquino, and lost.