Greg Rusedski has pulled out of Great Britain's crucial Davis Cup tie against Australia with a foot injury.
The British number two has already informed GB captain Roger Taylor, despite admitting that he will play in Doha in the new year.
The move casts further doubt over Rusedski's commitment to Great Britain's Davis Cup cause.
"I don't want to put the Davis Cup team in a difficult position by giving them last-minute notice if I had to withdraw," Rusedski said.