2009–10 Segunda División
The 2009–10 Segunda División season (known as the Liga Adelante for sponsorship reasons) was the 79th since its establishment.Real Betis, Numancia and Recreativo de Huelva are the teams which were relegated from La Liga the previous season.The teams which were promoted from Segunda División B were: Cádiz (champion), Cartagena (runner-up), Real Unión (play-off winner) and Villarreal B (play-off winner).The first red card of the season was given to David González from Las Palmas in their opening game against Real Sociedad.The first hat-trick was scored by Cristhian Stuani in the match between Castellón and Albacete.