sentences:  Leinster's reign as Heineken Cup holders was never seriously threatened in front of almost 82,000 spectators at Twickenham.Jonathan Sexton kicked three conversions and three penalties for a 15-point haul as Leinster became the first team since Leicester Tigers in 2002 to successfully defend the Heineken Cup.When replacement prop Heinke van der Merwe and Seán Cronin scored near full-time, it gave Leinster the biggest ever winning margin in a Heineken Cup final, Leinster 42–14 Ulster.