A product of América's academy programme, Díaz made his debut for the club in Liga MX on 22 November 2014 as an 84th-minute substitute in a 2–1 loss to Atlas.

[1] On 8 April 2015, he scored his first goal for the club in CONCACAF Champions League in a 6–0 win over Costa Rican side Herediano.

[1] Diaz returned to America for the 2017–2018 campaign, where he was finally promoted to América's first team on a regular basis.

His 2022 with Pacific was very successful, as he scored 13 goals in 18 league matches, factoring into the golden boot race.

[14] In 2013, Díaz played for the under-17 squad at the 2013 CONCACAF U-17 Championship, making five appearances and scoring one goal against Cuba as Mexico went on to win the tournament.

[1] At the 2015 FIFA U-20 World Cup, Díaz made appearances against Mali and Serbia as Mexico were knocked out in the group stage.