International achievement remained a key criterion during the award's first decade. Several sporting heroes were honoured, from America's Cup skipper Jock Sturrock and swimmer Dawn Fraser, to world champion motor racer Sir Jack Brabham and boxer Lionel Rose. The pioneering neurologist Sir John Eccles followed Burnet's example, becoming the second of five Australians to take out the Nobel Prize/Australian of the Year double. Achievers in the artistic realm were also well represented, including opera singer Joan Sutherland, renowned dancer and choreographer Robert Helpmann and the four members of the chart-topping singing group The Seekers – Judith Durham, Athol Guy, Keith Potger and Bruce Woodley. The focus on international achievement reflected the philosophy of the award organisers, who described the Australian of the Year as 'the person who has brought the greatest honour to Australia in the year under review.'