Kammala jumla mai zuwa: Pizzonia har yanzu yana aiki a Williams a matsayin direban gwaji, kuma lokacin da Heidfeld ya koka game da ciwon kai bayan ya yi rauni a cikin hadari a lokacin Jumma'a Practice Session a Monza, Pizzonia ya sami damar yin tsere. Bayan da bai shiga tseren F1 ba tun daga Grand Prix na Italiya na 2004, dan Brazil ya cancanci 16th, yana zuwa ta filin don yin koyi da sakamakon tseren 2004 <unk> yana ɗaukar matsayi na 7 da maki 2. Sa'an nan kuma ya yi tsere a cikin
Grand Prix na Belgium. inda ya sami tarar don fitar da Juan Pablo Montoya na biyu wanda aka sanya shi 'yan kaɗan daga ƙarshen. Pizzonia kuma ya ɗauki tuki a cikin Grand Prix na Brazil, amma tserensa ya ƙare kafin kusurwa ta farko bayan ya fitar da abokin aikinsa Mark Webber sakamakon haɗuwa da David Coulthard.