 In the first semester of the season he won his first professional title, the Apertura Tournament, that his club won after beating 1–0 Unión Española in the playoffs final.The next season, now with the arrival of Gerardo Pelusso as the coach, Díaz was being used as right back and only played five league games.On 13 August 2010, the player confirmed his incorporation to Deportes La Serena.