, ▁whilst ▁Sen na ▁retired ▁after ▁losing ▁second ▁g ear . ▁ ▁K li en ▁returned ▁to ▁drive ▁Sen na ' s ▁car ▁in ▁the ▁first ▁session ▁of ▁Friday ▁free ▁practice ▁for ▁the ▁European ▁Grand ▁Prix . ▁The ▁regular ▁drivers ▁again ▁shared ▁the ▁back ▁row ▁of ▁the ▁grid ▁after ▁qual ifying , ▁with ▁Ch and h ok ▁ahead ▁of ▁Sen na . ▁The ▁following ▁day , ▁Ch and h ok ▁again ▁finished ▁in ▁ 1 8 th ▁place , ▁with ▁Sen na ▁two ▁places ▁behind ▁after ▁making ▁an ▁un sch eduled ▁pit ▁stop ▁for ▁a ▁new ▁front ▁wing , ▁after ▁losing ▁his ▁original ▁part ▁in ▁a ▁collision ▁with ▁T imo ▁G lock ' s ▁Virgin ▁as ▁the ▁pair ▁were ▁being ▁la pped . ▁At ▁the ▁British ▁Grand ▁Prix , ▁Yam am oto ▁was ▁promoted ▁to ▁the ▁race ▁team ▁in ▁favour ▁of ▁Sen na . ▁The ▁drivers ▁again ▁qualified ▁on ▁the ▁back ▁row , ▁with ▁Ch and h ok ▁ahead , ▁and ▁achieved ▁another ▁double ▁finish ▁in ▁the ▁same ▁order , ▁despite ▁Ch and h ok ▁sust aining ▁aer od ynamic ▁damage ▁to ▁his ▁car ▁from ▁de br is . ▁For ▁the ▁German ▁Grand ▁Prix , ▁Sen na ▁rec laimed ▁his ▁seat , ▁whilst ▁Yam am oto ▁moved ▁across ▁to ▁the ▁# 2 0 ▁car ▁to ▁replace ▁Ch and h ok . ▁Yam am oto ▁qualified ▁in ▁ 2 3 rd   position , ▁ahead ▁of ▁Di ▁Gr ass i , ▁who ▁did ▁not ▁set ▁a ▁time ▁due ▁to ▁a ▁g ear box ▁problem