They are based in Massy, Essonne, in the southern suburbs of Paris and were founded in 1971. They were promoted from the Fédérale 1 at the end of the 2011–12 season, entering professional rugby for the first time in their history.[1]
Their stay in Pro D2 was short-lived: they were demoted at the end of the 2012–13 Rugby Pro D2 season. On 24 May 2014, it was announced that they had won promotion back to Pro D2 for the 2014–15 season as a result of winning the Fédérale 1 semi-final 17 – 9 against Tyrosse.[2] They went on to lose the final 18–14 to Montauban.[3]
Massy were again relegated after only one season, finishing bottom on the 2014–15 Pro D2 table. They would return to Pro D2 after winning the promotion group in the 2016–17 Fédérale 1 regular season.
Source: Pro D2 Rules for classification: When two teams have the same points total, position is determined by head-to-head results before points difference. (C) Champion; (P) Promoted; (R) Relegated Notes:
^ abGrenoble were penalised three competition points, and Montauban were penalised two, for financial and administrative issues that made the clubs "non-compliant with the regulatory provisions and decisions of the CCCP".[5][6]
^"Le FCG sanctionné de trois points de retrait au classement par la Ligue !". Le Dauphiné libéré (in French). 21 November 2022. Retrieved 18 January 2023. Un retrait de cinq points dont deux points avec sursis au classement du championnat professionnel de Pro D2 de la saison en cours [...] Cette sanction a été prononcée au motif du « non-respect des dispositions réglementaires et décisions de la CCCP ».