S.B.V. Excelsior is a professional football club based in Rotterdam, The Netherlands. It was founded on 23 July 1902 and was formerly known as "Rotterdamse Voetbal en Atletiek Vereniging Excelsior" (Rotterdam Football and Athletics Union Excelsior). The club was relegated from the top Dutch league, Eredivisie in 2007–08, and promoted back to the Eredivisie at the end of the 2009–10 season. After their relegation in 2012, the team returned to the Eredivisie two years later. The main rival of Excelsior is Sparta, another professional football team from Rotterdam.