Information: - The Hopman Cup is an annual international eight-team indoor hardcourt tennis tournament held in Perth, Western Australia in early January (sometimes commencing in late December) each year, which plays mixed-gender teams on a country-by-country basis. - The United States Tennis Association (USTA) is the national governing body for tennis in the United States. A not-for-profit organization with more than 700,000 members, it invests 100% of its proceeds to promote and develop the growth of tennis, from the grass-roots to the professional levels. The association was created to standardize rules and regulations and to promote and develop the growth of tennis in the United States. - The Indian Wells Tennis Garden is a tennis facility in Indian Wells, California, in the Coachella Valley. The 16,100-capacity Stadium 1 is the largest stadium at the tennis complex. It is the home of the BNP Paribas Open (previously the Pacific Life Open), a joint event of the ATP World Tour and the WTA Tour which constitutes the fifth largest tournament in the world. The Indian Wells Tennis Garden also hosts junior and adult United States Tennis Association events year-round In addition to these large events, during the week members are able to use the courts for recreational play and the Tennis Garden sets up matches for individuals who want to play. Additionally, the venue offers clinics and there are professionals on staff available for a fee. - The 2009 BNP Paribas Open was a tennis tournament played on outdoor hard courts . It was the 34th edition of the men 's event ( 21st for the women ) , known that year as the BNP Paribas Open , and was classified as an ATP World Tour Masters 1000 event on the 2009 ATP World Tour and a Premier Mandatory event on the 2009 WTA Tour . Both the men 's and the women 's events took place at the Indian Wells Tennis Garden in Indian Wells , California , United States from March 9 through March 22 , 2009 . - The Association of Tennis Professionals (ATP) World Tour is the elite professional tennis circuit organised by the ATP. The 2009 ATP World Tour calendar comprises the Grand Slam tournaments (supervised by the International Tennis Federation (ITF)), the ATP World Tour Masters 1000, the ATP World Tour 500 series, the ATP World Tour 250 series, the ATP World Team Championship, the Davis Cup (organized by the ITF), and the ATP World Tour Finals. Also included in the 2009 calendar is the Hopman Cup, which does not distribute ranking points, and is organised by the ITF. What is the relationship between '2009 bnp paribas open' and 'hardcourt'?
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surface played on