Australia captain Michael Clarke is to head from Cardiff to London for specialist treatment on a lower back injury in an effort to be ready for Saturday's Champions Trophy match against hosts England.
Clarke missed the last Test of the 4-0 series defeat in India during March, and the Indian Premier League that followed, due to back and hamstring problems.
He was not involved in Australia's first Champions Trophy warm-up against West Indies on Saturday, and the 32-year-old was also left out of the side to face India at Cardiff Wales Stadium today.
Cricket Australia has confirmed the skipper is a doubt for the holders’ clash with Alastair Cook's men at Edgbaston.
Cricket Australia physiotherapist Alex Kountouris said: "Michael is still experiencing some lower back pain and as such is not fit for the warm-up against India today.
"Michael will head to London tomorrow for specialist treatment and a decision on his fitness for the next game will be made in due course."