Dee ihe na-aga n'ihu maka paragraf a - N'asọmpi egwuregwu ụwa nke 2009 na Rome, Pellegrini mebiri ndekọ ụwa ọzọ na 400 m freestyle na oge nke 3:59.15, na-enweta ihe nrite ọla edo ma na-eme nke a na-aghọ nwanyị mbụ na-egwu mmiri iji mebie ihe mgbochi 4 nkeji na ihe omume ahụ; o meriri nrite ọla edo na 200 m freestyle ma mebie ndekọ ụwa nke ya na oge nke 1:52.98. Na 2009 European Short Course Championship na Istanbul, o mebiri ndekọ ụwa na 200 m freestyle na oge nke 1: 51.17. Na 2010 European Championship
na Budapest Pellegrini meriri ọla nchara na 800 m freestyle, n'azụ Lotte Friis na Ophélie-Cyrielle Etienne, na ọla edo na 200 m freestyle na oge nke 1: 55.45; n'otu afọ ahụ, ọ mara ọkwa na ya ga-arụ ọrụ na Laure Manadou bụbu onye nchịkwa, Philippe Lucas.