The 2004-05 campaign delivered a successful return to Serie A for Cagliari as Casteddu secured a respectable 12th-place finish and reached the Coppa Italia semi-finals. Leading the charge was a sensational attacking trio featuring Mauro Esposito, David Suazo, and the legendary Gianfranco Zola, with Esposito's career-best 16 league goals proving decisive. It was a defining year built on attacking flair and an immediate re-establishment of the club in the top flight after their promotion.