Elche Club de Fútbol, S.A.D. ( Valencian : Elx Club de Futbol, S.A.D. ) is a Spanish professional football club based in Elche , Province of Alicante , in the Valencian Community , Spain. Founded in 1923, the club competes in La Liga , holding home matches at the Estadio Martínez Valero , with a capacity of 33,732 seats. [ 3 ]