Another Fed cup rookie, Alexa Glatch, joins teenager Melanie Oudin and No. 1-ranked doubles player Liezel Huber as other members of the team announced Wednesday by United States captain Mary Joe Fernandez.
The two top American women, sisters Serena and Venus Williams, are not playing.
The matches are April 25-26 on an indoor hard court in Brno, Czech Republic.
The 38th-ranked Mattek-Sands was supposed to play for the Americans in the first round against Argentina in February but withdrew because of a hip injury. The Czech team is led by No. 25 Iveta Benesova and No. 45 Petra Kvitova.
