Williams driver Valtteri Bottas insists he 'll be 100 per cent ready to race at this weekend 's Malaysian Grand Prix , after a back injury forced him to miss the start of the season . The Finn sat out the Formula One curtain-raiser at Melbourne 's Albert Park in Australia on March 15 after tearing an annular disc in his lower back during qualifying . 'After such a frustrating Sunday in Australia , I have taken the necessary measures to make sure I arrive in Malaysia fit to race and ready to bring the results home , ' Bottas said in a statement on Thursday . Williams driver Valtteri Bottas is confident he 'll be fit to race at this weekend 's Malaysian Grand Prix . Bottas sat out the Australian Grand Prix after tearing an annular disc in his lower back during qualifying . In order to race at Kuala Lumpur , the 25-year-old will have to pass FIA medical tests at the track on Thursday - something his manager Didier Coton believes will be no problem . 'Valtteri is in very good shape , ' Coton told BBC Sport . 'He is working very hard . ' I spoke with him today [ Monday ] and he is in top shape . He will have to take the FIA medical , which I expect him to pass . ' I do n't see any reason why he would n't pass it - he tells me he is back to normal . I 'm very confident about it , but of course I am not a doctor . ' Williams currently lie fourth in the constructors ' championship after Bottas ' team-mate Felipe Massa secured 12 points with a fourth place finish in Melbourne . Bottas will have to pass FIA medical tests at the Kuala Lumpur track on Thursday in order to race .
Valtteri Bottas sat out the Australian Grand Prix due to a back injury . Malaysian Grand Prix takes places this weekend at Kuala Lumpar . Bottas will have to pass FIA medical tests at the track on Thursday to race .