Doha (Arabic: الدوحة‎, ad-Dawḥa or ad-Dōḥa, literally: "the big tree") is the capital city of the state of Qatar. Located on the Persian Gulf, it had a population of 998,651 in 2008, and is also one of the municipalities of Qatar. Doha is Qatar's largest city, with over 60% of the nation's population residing in Doha or its surrounding suburbs, and is also the economic centre of the country.

Doha also serves as the seat of government of Qatar, which is ruled by Sheikh Hamad bin Khalifa Al Thani. Doha is home to the Education City, an area devoted to research and education. Doha was the site of the first ministerial-level meeting of the Doha Development Round of World Trade Organization negotiations. The city of Doha held the 2006 Asian Games, which was the largest Asian Games ever held. Doha also hosted the 2011 Pan Arab Games and most of the games at the 2011 AFC Asian Cup. Doha will also host a large number of the venues for the 2022 FIFA World Cup. The World Petroleum Council held the 20th World Petroleum Conference in Doha in December 2011.

Simona Halep (born September 27, 1991) is a world top-50 tennis player playing on the ITF Women's Circuit and the WTA Tour, and is currently the number-two ranked women's tennis player in Romania, behind Monica Niculescu (out of 6 in the top-100).

Halep's father Stere runs a cheese and milk factory. She started playing tennis at age four, in emulation of her older brother. She has self-described her playing style as being "an aggressive baseliner," while New York Times columnist Michael Kimmelman described her as "a scrappy player from Romania, short but with potent ground strokes and a scrambler’s talent." In a post-match interview Serena Williams once commented that Halep "serves well [for] her height... She has so much power on her serve."

She started the year with a final in Nottinghill, losing to Arantxa Rus, then defeated Anastasia Pavlyuchenkova in the quarterfinals at the Australian Open Junior Championships, before losing in the semifinal to Jessica Moore.

At the ITF $50,000 tournament in Bucharest, Halep eliminated former Roland Garros semi-finalist Sesil Karatantcheva in the first round, before losing in the quarterfinals to Sorana Cîrstea in three sets, 6–3, 3–6, 1–6.

Sara Errani (born April 29, 1987 in Bologna, Italy), nicknamed "Poco Gigante", is a professional female tennis player from Italy. On May 21, 2012, she reached a new career-high of no. 23 on the Tour rankings. On May 14, 2012, Errani became a top 10 doubles player and had a career high rank of World No. 8. She won five WTA titles in her career, and also has two ITF Titles.

At age 12 her father sent her to the Nick Bollettieri Tennis Academy in Florida. At 16 she moved to Valencia, in Spain, to be coached by Pablo Lozano and David Andres.

Errani competed in her first event at the $10,000 Cagliari event in her native country of Italy in 2002 where she lost to Sun Tiantian 6–1, 6–0. She continued to compete in the ITF, where her best performance of the year was a semifinal appearance in $10,000 Zaton. She continued to participate mainly on the ITF, where she won her first tournament 6–1, 6–4 over Lucia Jiminez in Melilla, Italy 2005.

Her first WTA title of her career was in the Internazionali Femminili di Palermo, where she defeated Mariya Koryttseva. On July 27, 2008, she captured her second career title in two weeks defeating Anabel Medina Garrigues, 6–3, 6–3. She has also won six doubles WTA titles.

Rafael "Rafa" Nadal Parera (Catalan: [rəˈfɛɫ nəˈðaɫ pəˈɾeɾə]; Spanish: [rafaˈel naˈðal paˈɾeɾa]) (born 3 June 1986) is a Spanish professional tennis player and a former World No. 1. As of 28 May 2012 (2012 -05-28)^[update], he is ranked No. 2 by the Association of Tennis Professionals (ATP). He is widely regarded as one of the greatest players of all time; his success on clay has earned him the nickname "The King of Clay", and has prompted many experts to regard him as the greatest clay court player of all time.

Nadal has won ten Grand Slam singles titles, including a record six French Open titles (tied with Bjorn Borg), the 2008 Olympic gold medal in singles, a record 21 ATP World Tour Masters 1000 tournaments, and also was part of the Spain Davis Cup team that won the finals in 2004, 2008, 2009 and 2011. He completed the Career Grand Slam by winning the 2010 US Open, being the seventh player in history, and the youngest in the open era, to achieve it. He is the second male player to complete the Career Golden Slam (winner of the four grand slams and the Olympic Gold medal) after only Andre Agassi.

Andrew "Andy" Murray (born 15 May 1987) is a Scottish professional tennis player, ranked No. 4 in the world, and was ranked No. 2 from 17 to 31 August 2009. Murray achieved a top-10 ranking by the Association of Tennis Professionals for the first time on 16 April 2007. He has been runner-up in three Grand Slam finals: the 2008 US Open, the 2010 Australian Open and the 2011 Australian Open, losing the first two to Roger Federer and the third to Novak Djokovic. In 2011, Murray became only the seventh player in the Open Era to reach the semi-finals of all four Grand Slam tournaments in one year.

Andy Murray was born to Will and Judy in Glasgow, Scotland. His maternal grandfather, Roy Erskine, was a professional footballer who played reserve team matches for Hibernian and in the Scottish Football League for Stirling Albion and Cowdenbeath. Murray's brother, Jamie, is also a professional tennis player, playing on the doubles circuit. Following the separation of his parents when he was nine years old, Andy and Jamie lived with their father. Murray later attended Dunblane High School. Murray is in a five-year relationship with Kim Sears, who is regularly seen attending his matches. The relationship ended briefly in 2009 before they reconciled a short time later in 2010.