Diego Milito
In 2014 Díaz joined Racing Club. In the first fixture of the 2014 Transición he made three assists in the team's victory against Defensa y Justicia (two to Gabriel Hauche and one to Diego Milito), thus becoming the man of the match. He then assisted Luciano Lollo in the 2-0 victory against San Lorenzo de Almagro. In the ninth fixture, Racing faced Belgrano and Díaz made his fifth assist in the tournament after sending a precise head to scorer Gustavo Bou. Against Estudiantes de La Plata, he assisted Diego Milito to score on a 4-0 victory. The winger scored his first goal against Rosario Central, to help on a 3-0 win for the 18th fixture. On the last fixture game against Godoy Cruz, Díaz assisted teammate Ricardo Centurión to score the goal that would give Racing the national title after 13 years. In that tournament he played in all 19 games, made one goal and seven assists, making him the player with most assists in the championship.