|Full name||Ruben Popa|
|Date of birth||22 March 1989|
|Place of birth||Romania|
|Height||1.72 m (5 ft 8 in)|
|1998–2004||FC UTA Arad|
|2004–2008||CS Național Sebiș|
|2008–2009||FC Schweitenkirchen 1946|
|2009–2014||SSV Jahn Regensburg II||100||(44)|
|2011–2014||SSV Jahn Regensburg||14||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 1 July 2014.
† Appearances (Goals).
Popa started off his footballing career training three times a week at Romanian club FC UTA Arad, before later moving to Germany with his father. At the end of June 2009, Popa signed for SSV Jahn Regensburg II and made his professional debut for the first team during the 2011–12 3. Liga season in a 2–0 away loss to SC Preußen Münster. In summer 2013, he was promoted to the senior team.
- Krelle, Dieter (13 November 2009). "20-jähriger Rumäne wird für Jahn-U-23 immer wertvoller". Mittelbayerische Zeitung (in German). Retrieved 4 January 2012.
- "SC Preußen Münster vs. SSV Jahn Regensburg – 2:0". fussballdaten.de (in German). 15 October 2011.
- "Popa steigt beim Jahn auf". kicker (in German). 13 June 2013. Retrieved 15 June 2013.
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