 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.By winning the 2004 Speedway Grand Prix, Crump became Australia's first Individual World Champion since Jack Young had won his second successive World title in 1952.