 He became a starter that season and remained a regular in the Pumas lineup until leaving for Tigres in 1999.By 2001 he had formed a solid partnership with former UNAM teammate Claudio Suárez in a defense that carried Tigres to the Invierno 2001 final, where they lost to Pachuca.In 2003 Tigres again reached the final before losing to Pachuca, with Oteo now receiving much of his playing time at left back after the emergence of Hugo Sánchez Guerrero to join Suárez in the center.