Sergio Gabriel Ávila Valle, also known as El Gaucho, (born on 2 September 1985) is a Mexican former professional footballer.
He debuted on April 1, 2005, in the Chivas' loss against CF UAG 3–2, but was praised by the then coach Benjamín Galindo.
"El Gauchito" capped his first goal in the Liguilla (Playoffs) of the Clausura 2006 against Chiapas FC.
While Efrain Flores was coach he started every game and contributed to his team's efforts with seven goals.
Ávila always had leg problems throughout his career, and after many surgeries he was forced to retire at the young age of 25 due to insufficient healing.