Carlos Eduardo Fierro Guerrero (born 24 July 1994)[1] is a Mexican professional footballer who plays as a winger for UdeG.

Fierro was part of the Mexico U-17 FIFA World Cup champions in 2011, becoming the first national team to achieve it while hosting, defeating Uruguay 2–0 in the final and winning their second title.

[3] At the age of four, Fierro started playing football for a club subsidiary of Guadalajara in Sinaloa, coached by Bernardo Chico Vonn.

[5] Fierro made his senior team debut as a substitute on August 20, 2011, in a match against Monterrey[6][7] coming in for Omar Arellano at the 76th minute.

He was named to be in the initial line-up in the Copa Libertadores 2011 as a starter against Deportivo Quito, thus scoring his first official goal with the senior team in all competitions.

As Guadalajara has never been in the second tier of Mexican football is struggling to avoid relegation, but still in hopes of fighting for the first positions, Fierro has stated his intent of consolidating himself as a starter for the club and taking that next step.

Fierro has stated the support and guidance club legendary player Omar Bravo and Aldo de Nigris have shown him since his return to Guadalajara, even if it requires yelling and scolding.

[13][14] On 25 June 2019, San Jose Earthquakes acquired Fierro from Cruz Azul for an undisclosed fee, the club announced Tuesday.

Exactly 2 months after Carlos and Mexico won the U-17 World Cup, Gustavo died in the Hospital Country 2011 of Guadalajara, Jalisco at the age of 22.