Complete the following sentence: The 2008-09 Leinster Rugby season was Leinster's seventh competing in the Celtic League alongside which they competed in the 2007<unk>08 Heineken Cup. Although Leinster were eliminated early from the Heineken Cup, the season ended in celebration as 'the Lions' were crowned champions of the
2007-08 Celtic League. Home games were played in the RDS Arena, Dublin.