The U.S. Tennis Open: Where Are the American Men? Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Serbian tennis player Novak Djokovic returns a shot to Spain's Rafael Nadal during the men's US Open 2011 final at the USTA Billie Jean King National Tennis Center in New York September 12, 2011. ( EMMANUEL DUNAND/AFP / Getty ) Hosted by Todd Zwillich Produced by PRI and WNYC