[1] He moved to the Iranian club Zob Ahan in the summer of 2008 and was one of the top scorers of the league in his first season with 16 goals.
Castro lead Zob Ahan to two straight Iran Pro League second-place finishes in 2009 and 2010.
In 2010, he was one of the key players in Zob Ahan's run to the AFC Champions League final which they eventually lost.
After spending 4 seasons in the Iran Pro League with Zob Ahan, in 2012 he transferred to Japanese club Yokohama F.C.
but after an unsuccessful half-season he moved back to Iran once again but this time to Rah Ahan under coach Ali Daei.