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
Japan at the Hopman Cup Japan at the Hopman Cup Japan is a nation that has competed at the Hopman Cup tournament on five occasions, the first being at the inaugural annual staging in 1989. Before the introduction of the round robin competition format in 1996, Japan never passed the first round and since its introduction, the nation has never passed the qualification stage of the tournament. Japan also participated in the first two stagings of the now defunct Asian Hopman Cup, a qualifying tournament which ran from 2006 until 2009 and granted the winners entry into the Hopman Cup the following year. In both