[1][2] Ayala began his professional footballing career playing for Sportivo Iteño in the Paraguayan third division.
After having a solid year with Atlético Balboa, Ayala finished the 2005–06 Apertura championship as his team's top goalscorer and tied for second as the league's leading scorer.
After that season there was talk of Ayala becoming nationalised as a Salvadoran and playing for the national team, along with his teammate Alejandro de la Cruz Bentos, Vista Hermosa's Patricio Barroche and A.D. Isidro Metapán's Rodrigo Lago.
Ayala left Tigre to join Ecuadorian Serie A champion Deportivo Quito in July 2010.
[5] Ayala was called up to the Paraguayan national side in a South American FIFA World Cup qualifier against Ecuador.