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 . The German driver was forced off track by his car after an accident in FP3 at Sepang and did not return for qualifying on Sunday. Bottas will have to pass FIA medical tests at the track on Thursday to race .