Complex sentence: Andújar started his career at Club Atlético Huracán in the Primera division in 2001, in 2003 the club were relegated to the Argentine 2nd division but to his credit he decided to stay with the club.
Split into simpler sentences: Andújar started his career at Club Atlético Huracán in 2001. Two years later, the club was relegated to the Argentine 2nd division but he decided to stay with the club.