With brothers Bob and Mike Bryan still en route from Madrid after claiming their record-tying 61st doubles title, the American duo won 5-7, 6-4, 10-8 in a champions tiebreaker.
The match was played in a largely empty stadium after several rain delays disrupted the schedule.
Story continues below ↓advertisement | your ad hereAlso in the Red Group, the Czech Republic clinched a win over Spain after Tomas Berdych outlasted Nicolas Almagro 6-7 (4), 6-4, 6-3 to give his team a 2-0 lead ahead of the doubles.
© 2010 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Jonas - Messi won’t leave BarcaAustralia, U.S. tied in World Team Cup tennis