Tomas Costa is an Argentine footballer that play as Left back for the Chilean Primera División side Universidad Católica.He was promoted to the first team on January 2006 and made his professional debut for the club in a league game against Estudiantes de La Plata as a 85th minute substitute in a 1–0 victory.He made his club debut against Unión La Calera in a league's defeat 2–1 at Estadio Municipal Nicolás Chahuán, he started the match as titular in the position of right back and was replaced in the 65th minute by Santiago Dittborn. His position as right back is because that Mirosevic failed to join to Al Ain. On 3 March 2011, he settled into the team well and he scored a vital long range goal to help them record 3–4 win against Argentine side Vélez Sársfield in the Copa Libertadores 2011, their first ever away win against an Argentine team in the Libertadores..