How many times was Australian Jason Crump Speedway World Champion?

Jason Philip Crump (born 6 August 1975 in Bristol, England) is an Australian former international motorcycle speedway rider. He is a three-time Speedway World Champion, a World Cup winner and a former World Under-21 Champion.

In a 21-year career in Speedway, Jason Crump finished with 7 World Championship titles to his name (4 individual including the U/21 title, and 3 teams), making him one of the most successful Australian motorcycle racers of all time (including road racing, speedway and motocross).

Crump's first world title came in 2004 when he beat then 5 time champion Tony Rickardsson, having won two of the nine Grand Prix that season. He dominated the 2006 season winning four out of nine Grand Prix to take the title for the second time, beating American Greg Hancock into second place. On 14 September 2009, Crump fell during a last heat decider for Belle Vue against Ipswich, sustaining injuries to his left arm and shoulder. In spite of this he finally won his third world title in 2009.