 At Wasps he enjoyed a great deal of success, which included a total of four club trophies that the team won during the 2002-03 and 2003-04 seasons.He was a replacement as Wasps won the 2002–03 Premiership Final, and two years later started when they won the final for the third year in a row.Greening was injured for much of 2004 meaning he missed out on Wasps' victories in the 2004 Premiership Final and the 2004 Heineken Cup Final.