||This biographical article needs additional citations for verification. (June 2013)|
Nainggolan playing for Belgium
|Date of birth||4 May 1988|
|Place of birth||Antwerp, Belgium|
|Height||1.75 m (5 ft 9 in)|
|2010||→ Cagliari (loan)||7||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 00:00, 16 September 2013 (UTC).
† Appearances (Goals).
Nainggolan was born in Antwerp to an Indonesian father of Batak ancestry — Radja (or Raja) meaning "king" in Indonesian language. His mother was Belgian, and he also had a half brother and two half sister, as well as a twin sister.
Nainggolan arrived at Piacenza Calcio in late 2005 at the age of 17, from local K.F.C. Germinal Beerschot. Still a junior he managed to appear in two Serie B games for the club, over the course of two separate seasons.
Nainggolan played 38 matches in the 2008–09 campaign for the Emilia-Romagna outfit, scoring three goals for an eventual 10th-place finish. On 27 January 2010 he was loaned to Cagliari Calcio in Serie A, with the Sardinians having an option to buy the player permanently at the end of the season. He made his league debut on 7 February, playing seven minutes in a 0–3 away loss against Inter Milan.
On 21 June 2010, Cagliari acquired Nainggolan on a permanent basis.
- "From Indonesian king to Juventus, Inter & AC Milan target - Why Radja Nainggolan is set for superstardom". Goal.com. 12 January 2012. Retrieved 13 January 2012.
- Nainggolan: "Vengo per migliorare" – "La Serie A è un sogno" (Nainggolan: "I come to improve" – "Serie A is a dream"); Cagliari's official website, 27 January 2010 (Italian)
- Internazionale 3-0 Cagliari; ESPN Soccernet, 7 February 2010
- Kirin Cup: De Laet , Kitoko et Nainggolan aussi (Kirin Cup: De Laet, also Kitoko and Nainggolan); DH, 27 May 2009 (French)
- Stats at Tutto Calciatori (Italian)
- Radja Nainggolan at National-Football-Teams.com
- National team data
- Transfermarkt profile