Valtteri Bottas may miss the Australian GP after a back injury led to him spending the night in hospital.
A decision on his participation in the race will be made in conjunction with the FIA.
A team statement said: “He was transferred to Albert Hospital in Melbourne for further precautionary scans which revealed that Valtteri had sustained some soft tissue damage in his lower back.
“He remained in hospital overnight and following a restful night is now working with a physiotherapist prior to final assessment by the FIA in the early afternoon to determine whether he will be able to race later today. The team will release a further update as information is available.”
Adam Cooper's F1 Blog 
This is a bummer. Big time. Hope he recovers quickly, if not for Oz at least back at Sepang.
Agreed. But if not in time for Sepang, what are the chances of pinching Nasr for a race, letting Sauber run VDG? Pat Symonds did say they have ‘options’.. presumably also Susie Wolff and Alex Lynn.