Dallaglio returned from an ankle injury early in the 2006–07 domestic season to reclaim the club captaincy at Wasps, but an indifferent Guinness Premiership season ended with them failing to qualify for the play-offs for the first time since the introduction of the knockout system. However, Dallaglio and his teammates saved their best performances for the Heineken Cup; he led the club to its second European championship win on 20 May 2007. The final, played at Twickenham, set a world record for the highest attendance figure for a club rugby match (at around 82,000). Wasps' opponents, Leicester Tigers had already won the EDF Energy Cup and the Guinness Premiership trophies and were favourites to achieve an unprecedented Treble, especially as they had beaten Wasps 40–26 at Welford Road less than a month earlier, but it was Wasps who emerged as victors, winning the game 25–9.