Ku qor sii wadida faqradan - At 2009 World Championships ee Rome, Pellegrini ayaa mar kale jabiyay rikoodhka adduunka ee 400 m ee qaabka xorta ah oo leh waqti ah 3:59.15, ku guuleystay billad dahab ah oo sidaas samaynaya noqday dabaasha haweenka ugu horeysay ee jebiyo 4-daqiiqo caqabad ku dhacdo; waxay ku guuleysatay billad dahab ah sidoo kale 200 m qaabka xorta ah oo ay jabiyay iyada u gaar ah rikoodhka adduunka la waqti ah 1:52.98. 2009 European Short Course Championships ee Istanbul waxay jabisay rikoodhka adduunka ee 200 m ee qaabka xorta ah iyada oo leh waqti 1:51.17. Koobka Yurub ee 2010
Budapest Pellegrini waxay ku guuleysatay billad naxaas ah 800 m oo qaab xor ah, oo ka dambeysa Lotte Friis iyo Ophélie-Cyrielle Etienne, iyo billad dahab ah 200 m oo qaab xor ah oo leh waqti 1:55.45; isla sanadkaas, waxay ku dhawaaqday inay la shaqeyn doonto Laure Manadou tababarihii hore, Philippe Lucas.