game professionally via the provincial network through centralised player contracts and the subsequent on-field success achieved by Leinster and the other provinces resulted in a significant increase in support within a decade. Leinster had 3,700 season ticket holders in 2006, double the number of the previous season. The Official Leinster Supporters Club was formally established as a club in 2007. The last match at the old Lansdowne Road stadium was against Ulster on 31 December 2006 before it was demolished to make way for the new Aviva Stadium, earning the match the moniker of "The Last Stand". Leinster won the match 20–12, with an attendance of 48,000 – a record at the time. A previous attendance record in the Pro12 was also set at Lansdowne Road, for a game between Leinster and Munster which drew a crowd of 30,000. Leinster's supporters were named as 'Player of the Month' for April 2009 following their support in the European Cup Quarter Final against Harlequins at The Stoop. On several occasions Leinster have set the record for the largest Celtic league and Pro12 attendances. On 2 October 2010, Leinster beat Munster 13–9 in the 5th round of the league at the Aviva Stadium. This set a new crowd attendance record for a Pro12 game at 50,645. They subsequently set a new record on 29 March 2014 during a sellout match against Munster in which 51,700 fans were in attendance. This Pro12 record was subsequently surpassed by attendances at the Judgement Day fixtures. During the 2014–15 Pro12 season Leinster had the best support of any club in the PRO12 league with an average attendance of 17,717. Leinster's European Cup clash against Munster at Croke Park on 2 May 2009 set a world record attendance at the time for a club rugby union game with a crowd of 82,208. Home Attendance Up to date as of the 2021–22 season. Leinster A Leinster A is the team that represents Leinster in the British & Irish Cup, having won the competition a record two times to date, in the 2012–13 season as well as the 2013–14 season, also becoming the first and only side to ever successfully defend the trophy. Leinster A also compete in the All Ireland Inter-provincial Championship. Pre-professionalism and a formal Celtic league structure, the main Leinster team competed in the AIIPC. Since the advent of professionalism, the provinces have fielded lesser teams to