Martina Navratilova will return to Fed Cup action next month after an eight-year absence, when she joins the US team for their tie with Belgium.
Navratilova has not played in the Fed Cup since 1995
The veteran, who will be 47 when the tie comes round, is unbeaten in 37 Fed Cup ties, and will become the oldest player to play in the event.
US captain Billie Jean King said she was excited about the tie, which takes place in Moscow on 19-20 November.
"Martina brings additional power to our line-up," said King.
Navratilova, who last played in the Fed Cup in 1995, is joined by Meghann Shaughnessy, Lisa Raymond and Alexandra Stevenson in the US team.
Belgian captain Ivo Van Aken has until 9 November to name his team - although his country's star women Kim Clijsters and Justine Henin-Hardenne have ruled themselves out of contention.
The winners of the US-Belgium semi-final will face either France or Russia in the final.