Football Club Koper , commonly referred to as FC Koper or simply Koper , is a Slovenian football club based in Koper that competes in the Slovenian First League , the top flight of Slovenian football . The club was founded in 1920. [ 1 ] They won the Slovenian First League once, in the 2009–10 season, and the Slovenian Cup four times, most recently in 2021–22 .
