Sports Illustrated's Brian Cazenueve made these medal picks for tennis:
TENNIS
Men
Singles
G: Roger Federer, Switzerland
S: Rafael Nadal, Spain
B: Novak Djokovic, Serbia
Hardcourt surface gives Federer the edge over Nadal.
Doubles
G: Bryan & Bryan, U.S.
S: Llodra & Clément, France
B: Federer & Wawrinka, Switzerland
U.S. hasn't won a medal in this event since 1988.
link is here:
http://sportsillustrated.cnn.com/200.../5.html#tennis