New Zealand Rugby has today acknowledged the service of outgoing Crusaders’ CEO Hamish Riach who has announced he is stepping down from the position after 17 years in the role.Riach, who led both Crusaders and Canterbury for 16 years before focussing on the Super Rugby club, will leave at the end of the 2018 Investec Super Rugby season.New Zealand Rugby Chief Rugby Officer Nigel Cass said Riach was one of the most successful administrators in the game domestically and internationally.“Under his watch, the Crusaders have won five Super Rugby titles and Canterbury have won 10 national championships, but beyond that, both organisations under his leadership, helped to steer and support the Canterbury region and community through some tough years.“Hamish will certainly leave a big hole. He has been a staunch advocate and successful leader for rugby, particularly in the South Island.  The fact that he has led not only a Super Club but a Provincial Union for such a long period speaks volumes about his ability as a leader, businessman and sporting administrator. “We wish Hamish and his family all the best for their future endeavour,” Cass said.Riach will leave the Crusaders at the end of August and take up the role as CEO of the Ashburton District Council.