Cecilia Colledge from Great Britain was the first woman to complete a double jump, the Salchow, in competition, at the 1936 European Championships. The first triple Salchow by a male skater was completed by American Robbie Robertson at the 1955 World Championships. According to the ISU, the first triple Salchow completed by a woman skater is "not definitely established". The ISU also stated that Canadian Petra Burka was given credit for a triple Salchow at both the 1962 Canadian Championships and the 1965 World Championships, but "a report" from the 1961 European Championships gave credit to Austrian Helli Sengstschmid and Jana Mrazkova from Czechoslovakia. Timothy Goebel from the U.S. was the first man to perform a quadruple Salchow in competition, at the 1997-1998 Junior Grand Prix final. Miki Ando from Japan was the first woman to complete a quadruple Salchow, at the 2002-2003 Junior Grand Prix final.