 It was during the Wallabies' World Cup semi-final win against the All Blacks that Darwin sustained a neck injury that forced him to retire from rugby.After retirement, Darwin made the switch from player to coach, starting at club rugby level with Sydney's Norths where he was appointed head coach in 2005.In 2006, Darwin was involved with the start up of the Super 14 club, the Western Force, as the Forwards Coach until mid-2006.