The 2011 Indonesia Super League U-21 group stage matches took place between 19 January - 17 April 2011 for first group stage and between 26–30 April 2011 for second group stage.
Second round
All match play in Soemantri Brodjonegoro Stadium. The draw for this Round took place on 21 April 2011 with ties to be played on the weekend of 26–30 April 2011.
References
2010–11 Indonesia Super League U-21 group stage Wikipedia(Text) CC BY-SA