Born in Melbourne, Lynch took up hockey after being selected in the primary schools state team. She competed in the 2005 Junior World Cup in Chile before making her international senior team debut at the 2006 Champions Trophy in the Netherlands. In 2014 she was awarded Goalkeeper Of The Tournament at the World Cup and then nominated for International Goalkeeper Of The Year, an award she later won in 2019/2020. Now a veteran Hockeyroo, dual Olympian, dual Commonwealth Games gold medalist, and World Cup silver medalist, Rachael Lynch has played in over 220 games for Australia.