 On 5 February 2004 he was named manager of Segunda División side CD Leganés, but failed to retain its division status and was subsequently sacked.On 8 January 2005 Martín Delgado was appointed at the helm of Deportivo Alavés B, in Segunda División B.On 30 June, after taking the club to a comfortable mid-position, he resigned and was named manager of CD Castellón in the second tier, replacing fired Álvaro Cervera.