Damián Rodrigo Díaz Montero (Spanish pronunciation: [daˈmjan roˈðriɣo ˈðiaθ], born 1 May 1986) is a professional footballer who plays as an attacking midfielder for Banfield.

However, after having success at the football academy he signed his first professional contract with The Canallas as a 20-year-old, to finally in 2007, being promoted to the first adult team by then coach Carlos Ischia, who saw in him a lot of talent.

On 8 April, Díaz made his league debut with Rosario in a 2–1 away loss against Godoy Cruz, scoring his side's goal in the 91st minute at Mendoza.

After a successful 2007–08 season completing 4 goals in 25 games, Díaz was transferred to Boca Juniors, following his coach Carlos Ischia footsteps, who also left the club for Buenos Aires-based team.

On 1 March, Díaz made his league debut during Clausura's fourth week 3–1 home win over Huracán as a starter, being substituted on 46th minute by Nico Gaitán.

Díaz arrived as part of Gary Medel's transfer operation to his former club Boca Juniors in a loan barter without purchase option.

Díaz made his Chilean Primera División début on 27 July 2009, in a 2–0 win over Deportes La Serena at San Carlos de Apoquindo.

[5] In that season, Damián was fully consolidated in the position of playmaker at the scheme of Católica's coach, Marco Antonio Figueroa.

Due to his successful at Chile, the club of his country Colón de Santa Fe showed interest on him and also came up the possibility of return to Boca Juniors, one of the big teams of Argentina and South America.

Despite the possibility of playing in Argentina, one of the best leagues in the world, Díaz was consistent and extended his scoring streak against Ñublense in a game that was won by Católica 4–2, and he was named the man of the match.

In a vital Ecuadorian Super Clasico home match held on 4 November, Díaz scored 2 goals in a thrilling 5–0 win over city rivals Emelec.