Estiarte is the second Spaniard to compete at six Olympic Games, after equestrian Luis Álvarez de Cervera.
Manuel Noriega | Joan Manuel Serrat | Manuel I of Portugal | Manuel de Falla | Juan Manuel Santos | Manuel L. Quezon | Manuel Belgrano | Manuel Alejandro | Manuel Castells | Manuel Zelaya | Manuel Álvarez Bravo | Juan Manuel de Rosas | Víctor Manuel | Richard Manuel | Manuel Requena | Manuel Mujica Láinez | Manuel II of Portugal | Manuel Roxas | Manuel Pineda Munoz | Manuel Oribe | Manuel Mijares | Manuel L. Quezon University | Juan Manuel Márquez | Juan Manuel Fangio | Manuel Valera | Manuel Penella | Manuel I Komnenos | Manuel Barrueco | Charlie Manuel | Manuel Ugarte |
He is, jointly with Spaniard Chiqui Sans, the sixth water polo player to compete at five Olympics, after Briton Paul Radmilovic, Brazilian João Gonçalves Filho, Hungarian Dezső Gyarmati, Italian Gianni De Magistris, and fellow Spaniard Manuel Estiarte.