Dan Evans has replaced the injured Kyle Edmund in the Great Britain team that will begin the defence of their Davis Cup title against Japan on Friday.
Edmund, who was expected to play two singles rubbers, injured his back during practice in Birmingham.
His absence means Evans features in the British team alongside Andy Murray, Jamie Murray and Dominic Inglot.
On Friday, Evans will play world number six Kei Nishikori, whom he beat in the first round of the 2013 US Open.
The draw for the tie takes place at 13:00 GMT on Thursday, when the order of the day's matches will be revealed.