The 2009–10 La Liga season was Xerex's first season as well which overall season for La Liga since it's establishment?
2009–10 Xerez CD season: The 2009–10 Spanish football season is Xerez's first season ever in Liga BBVA. 2009–10 La Liga: The 2009–10 La Liga season (known as the "Liga BBVA" for sponsorship reasons) was the 79th La Liga since its establishment.
79th