Petrolul Ploiesti is a Romanian football club based in Ploiesti. The club was founded in 1922 and played in the Divizia A until being relegated in the 2005-2006 season. However, they returned to the top flight in 2007 and have been in the top division ever since. Petrolul Ploiesti play their home games at the Stadionul Naţional. The team colours are blue and white.