 In 1978–79 the club finished 17th overall with 39 points 6 more than the last place Toros Neza with a record of 5 wins 24 draws and 9 losses scoring 25 goals and allowing 34.In the 1979–80 tournament the club finished tied in the last place along with Unión de Curtidores and so the clubs had to play a relegation series; Unión de Curtidores came out with a 4–3 victory keeping its place in the Mexican First Division
CD Oro ended relegated and hasn't been able to come back to the Mexican First Division ever since.The clubs played in the second division during most of the 1980s coming close to promotion in 1984 when they lost the final to Zacatepec.