High Quality Content by WIKIPEDIA articles! The 2010–11 Heineken Cup was the 16th season of the Heineken Cup, the annual rugby union European club competition for clubs from the top six nations in European rugby. It started with three matches on 8 October 2010 and ended on 21 May 2011 with the final at Cardiff`s Millennium Stadium where Leinster beat Northampton Saints 33 – 22.