2011 Hopman Cup of play. Eight teams competed for the title, with two round robin groups of four, from which the top team of each group progressed to the final. Spain were the 2010 champions but were not invited to defend their title. In the final the United States of America team of Bethanie Mattek-Sands and John Isner defeated Belgium's Justine Henin and Ruben Bemelmans 2–1. This was the USA's sixth Hopman Cup title. The 2011 Hyundai Hopman Cup is an invitational tennis tournament and is also known as the Official Mixed Teams Championships of the ITF. The 2011 cup has prize money
Serbia at the Hopman Cup of players who have played for Serbia in the Hopman Cup. In the final, Janković was unable to play her singles match against Serena Williams of the USA due to injury. This gave the point to the US, giving them a one-point advantage going into the men's singles and mixed doubles matches. Yugoslavia at the Hopman Cup Serbia at the Hopman Cup Serbia is a nation that has competed at three Hopman Cup tournaments since it gained its independence following the breakup of Yugoslavia in the early 1990s. It first competed in the 18th Hopman Cup in 2006 (under the