The biggest performance of the team based in Diosig was during the 1977–78 Cupa României season, when diosiganii achieved the Round of 32, where they were eliminated by the top-flight club Farul Constanța, score 0–6.

Phoenix spent two seasons in the division but with bad results, ranking on the bottom of the table, then the club was re-organized again, under the current structure of CS Diosig, in 2014.

The team that brought back Diosig in the 4th tier, after 23 years of absence was formed by the following players: Vlad Ghețe, Peter Sabău, Emanuel Man (goalkeepers); Szűcs Tibor (captain), Karácsonyi Gergö, Florian Marc, Marcel Madar, Hegedüs Szabolcs, Gabriel Costea, Coriolan Hodișan, Bogdan Iambor, Gheorghe Vaida, Alin Maghiar, Flaviu Filimon, Petru Ciorba, Lolo Tibor, Mircea Onița, Cristian Morar, Sergiu Selegian, Emil Popa, Ramses Gado; Vigh Zoltán (manager), Marcel Madar (assistant), Sebastian Tamaș (chairman), Sztojka Dezsö (team manager).

CS Diosig had a perfect run and lost only one game, in the last round of the season, against Club Atletic Oradea, but in the moment when diosiganii were sure for their spot in the promotion play-offs.

This historical team of CS Diosig was formed by the following players: Eduard Beke, Jeremy Demeter (goalkeepers); Tibor Szűcs, Marcel Gal, Cosmin Letan, Laviniu Dărăban, Adrian Micaș, Adrian Popa, Claudiu Codoban, Raul Ember, Tobias Tamaș, Gabriel Costea, Florin Borțiș, Carlos Covaciu, Florin Pop, Sorin Ban, Raymond Lukács, Constantin Roșu, Cristian Cigan, Dănuț Borțiș; Mădălin Popa (manager), Constantin Sabău (chairman).