César Fuentes

Youth career

Fuentes started his career at Primera División de Chile club O'Higgins. He progressed from the under categories club all the way to the senior team.

O'Higgins

In 2012, Fuentes was runner-up with O'Higgins, after lose the final against Universidad de Chile in the penalty shoot-out. Fuentes won the Apertura 2013-14 with O'Higgins. In the tournament, he played in 15 of 18 matches. In 2014, he won the Supercopa de Chile against Deportes Iquique, playing the 90 minutes of this match that O'Higgins won at the penalty shoot-out. He participated with the club in the 2014 Copa Libertadores where they faced Deportivo Cali, Cerro Porteño and Lanús, being third and being eliminated in the group stage.

Universidad Catolica

On 12 June 2015, Fuentes signed for 4 years with Universidad Católica.

Colo Colo

On 17 December 2019, Fuentes signs a contract with Colo Colo on a loan term with probable buyout.

Deportes Iquique

Fuentes joined Deportes Iquique for the 2025 season.

Deportes Limache

On 27 December 2025, Fuentes signed with Deportes Limache.

He was part of the Chile national under-20 football team, who played the 2013 South American Youth Championship in Argentina and joined the first team for the 2013 FIFA U-20 World Cup based in Turkey, where they reached the quarter-finals. He was called up to the Chile under-23 squad for the 2023 Pan American Games as an overage player alongside Brayan Cortés and Matías Zaldivia. He made five appearances and scored one goal, winning the silver medal At senior level, he was a substitute player in the 2026 World Cup qualification match against Venezuela on 17 October 2023.