The two teams which amalgamated cumulated nine championship titles of France: seven for the Stade Bordelais and two for the Club Athlétique Bordeaux-Bègles Gironde.

The CA Béglais did not reach soaring highs before the First World War, finally gaining two French Championships in 1969 and 1991 and then taking part in the first European Rugby Cup in 1995.

There was strong insight from former influential players (Serge Simon, Bernard Laporte) who pushed for a result of pooling the assets of the two clubs.

One of the arguments frequently employed in favour of fusion was that the local companies did not know which club to promote.

This association gathered a network of local companies eager to imply themselves in the formation of a large club in Bordeaux.

A union was sealed, in the shape of a Professional Sporting Public Limit Company (SASP), with the issue of work for a committee made up of six members resulting with members from each of the two clubs (CABBG : Michel Moga, Alban Moga, Raymond Chatenet; Stade bordelais : Jean-Pierre Lamarque, Herve Hargous, Philippe Moulia).

Frederic Martini remained one year as the president of USBCABBG before yielding his place to Laurent Marti, entrepreneur bergeracois (Groupe Top Tex, basé à Toulouse) at the start of the 2006 season.

The UBB beat Grenoble (12–19) in the semis, securing their spot in the final against SC Albi.

In the 2015–16 season, they also played three home matches at the newer and even larger Matmut Atlantique stadium.

The Bordeaux squad for the 2024–25 season is:[3][4] Note: Flags indicate national union under World Rugby eligibility rules.