 Del Solar began working as a coach with Club Atlético Colón, aided by former Tenerife teammate Juan Antonio Pizzi as the pair was sacked after only three matches and as many losses.He was named manager of Sporting Cristal afterwards, leading the team to the domestic league in 2005.In 2007, del Solar was appointed at former club Club Deportivo Universidad Católica, finishing second behind Colo-Colo in Apertura 2007.