Kammala wannan jumla: Weightman ya inganta mafi kyawun aikinsa na duniya a tseren tseren ƙasa a
2009 IAAF Gasar Cin Kofin Duniya ta Duniya, ta gama goma sha bakwai kuma ta jagoranci tawagar Australiya zuwa matsayi na bakwai a cikin matsayi. A Wasannin rabin Marathon na 2009 na Christchurch, ita ce ta farko da ta wuce wannan matsayi don yin rikodin babban nasararta na farko a kan hanyar da ke gudana. Ta yi gasa a gasar zakarun duniya ta farko a wasannin motsa jiki daga baya a wannan kakar a matsayin Australia kawai mai halarta a wasan marathon na mata; ta sanya goma sha takwas a gaba ɗaya kuma ta kafa sabon tarihin sirri a kan nesa tare da lokacin 2:30:42.