Rubuta ci gaba don wannan sakin layi - Williams ta riƙe Nakajima don kakar 2009. A gasar Grand Prix ta Ostiraliya ta 2009 ya yi karo da bango a juzu'i na shida, ya fitar da shi daga tseren. Nakajima ne kawai direba ya yi ritaya a Bahrain, ya tsaya a zagaye biyar kafin karshen tare da man fetur mai zafi. Ya kuma fadi a zagaye na karshe na Monaco Grand Prix yayin da yake gudana a matsayi na 10. Ya kusan zira kwallaye a Grands Prix da yawa, gami da rasa maki bayan an jinkirta shi a cikin rami a Grand Prix na Turkiyya. A gasar Grand Prix ta Biritaniya, Nakajima ya sami mafi girman filin sa na Formula One, inda ya cancanci a matsayi na biyar mai ban sha'awa a gaban jagoran gasar zakarun duniya Jenson Button. Koyaya, tseren nasa ya lalace ta hanyar dabarun rami mara kyau, kuma daga ƙarshe ya gama a waje da maki. Nakajima ya sake kusan zira kwallaye a gasar Grand Prix ta Hungary
, yana gamawa da sakan 0.7 a bayan Jarno Trulli na takwas. Ya sake zama na tara a Singapore. A Brazil Nakajima ya sake yin gwagwarmaya don maki har sai da sabon dan wasan Kamui Kobayashi ya fitar da shi. Nakajima ya gama kakar ba tare da samun maki ba, tare da abokin aikinsa Nico Rosberg wanda ke da alhakin kowane maki na gasar da kungiyar Williams ta samu, tare da Nakajima ne kawai wanda ba shi da maki daga cikin direbobin da suka halarci kowace tsere a shekarar 2009.