The 2020-21 campaign was a season of great promise and achievement for Sparta Rotterdam as Kasteelheren secured a fantastic 8th-place finish in the Eredivisie under manager Henk Fraser, earning a coveted spot in the European competition play-offs. Spearheading the attack was the German centre-forward Lennart Thy, whose 14 goals proved crucial in a campaign built on attacking verve, notably in their biggest home victory, a cathartic 6-0 demolition of rivals ADO Den Haag. Goalkeeper Maduka Okoye was a standout performer and was later named the club's Player of the Season. It was a memorable year that marked the club's successful push for Europe and remains a defining chapter in their modern history.