The Miami Masters (currently sponsored by Sony Mobile) is an annual tennis tournament for men and women held in Key Biscayne, Miami, Florida. It is an ATP World Tour Masters 1000 event on the men's tour and a Premier Mandatory event on the women's tour and is played on hard courts at the Tennis Center at Crandon Park. The tournament is currently held in March each year.

The Miami Masters, which has had multiple sponsorships, was initially known as the Lipton International Players Championships and was a premier event of the Grand Prix Tennis Tour from 1985 until 1990 part of the Grand Prix Championship Series. In 2000, there was a change of title sponsor and the event was renamed the Ericsson Open. In 2002, the event became known as the NASDAQ-100 Open. In 2007, the tournament was renamed the Sony Ericsson Open in a deal where the company will pay $20 million over the next four years.

In 2010, a record 300,000 visitors attended matches at the 12-day Sony Ericsson Open making it one of the largest tennis tournaments outside the four Majors. In 2011, 316,267 visitors attended the Open.

Miami ( /maɪˈæmi/ or /maɪˈæmə/) is a city located on the Atlantic coast in southeastern Florida and the county seat of Miami-Dade County, the most populous county in Florida and the eighth-most populous county in the United States with a population of 2,500,625. The 42nd largest city proper in the United States, with a population of 408,568, it is the principal, central, and most populous city of the South Florida metropolitan area, and the most populous metropolis in the Southeastern United States. According to the US Census Bureau, Miami's metro area is the seventh most populous and fifth-largest urban area in the United States, with a population of around 5.5 million.

Miami is a major center and a leader in finance, commerce, culture, media, entertainment, the arts, and international trade. In 2010, Miami was classified as a Alpha- World City in the World Cities Study Group’s inventory. In 2010, Miami ranked seventh in the United States in terms of finance, commerce, culture, entertainment, fashion, education, and other sectors. It ranked thirty-third among global cities. In 2008, Forbes magazine ranked Miami "America's Cleanest City", for its year-round good air quality, vast green spaces, clean drinking water, clean streets and city-wide recycling programs. According to a 2009 UBS study of 73 world cities, Miami was ranked as the richest city in the United States, and the world's fifth-richest city in terms of purchasing power. Miami is nicknamed the "Capital of Latin America", is the 2nd largest U.S. city (after El Paso) with a Spanish-speaking majority, and the largest city with a Cuban-American plurality.

Grigor Dimitrov (Bulgarian: Григор Димитров; born May 16, 1991, in Haskovo) is a tennis player from Bulgaria. He achieved a career high ranking of World No. 52 on August 22, 2011. Dimitrov also enjoyed a very successful junior career, in which he held the World No. 1 ranking and won the boy's singles titles at the 2008 Wimbledon Championships and the 2008 US Open.

Grigor was born in Haskovo, Bulgaria as the only child of father Dimitar, a tennis coach and mother Maria, a sports teacher and former volleyball player. He first held a tennis racket, given to him by his mother at the age of three and when he was five he began to play daily. During his teenage years he lived in Paris, France while training at Patrick Mouratoglou's Tennis Academy. He speaks fluent Bulgarian and English and says his main interests are all sports, cars, computers and watches.

His first major junior coup was when, at aged 14 he claimed the U14 European title. In 2006 he won the Orange Bowl U16 boys singles and was later named the Eddie Herr International 2007 Rising Star.

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.

Novak Djokovic (Serbian: Новак Ђоковић or Novak Đoković; pronounced [nɔ̂ʋaːk dʑɔ̂ːkɔʋitɕ] ( listen); born 22 May 1987) is a Serbian professional tennis player who has been ranked World No. 1 by the Association of Tennis Professionals (ATP) since 4 July 2011. He has won five Grand Slam singles titles: the 2008, 2011 and 2012 Australian Open, the 2011 Wimbledon Championships, and the 2011 US Open. By winning three Majors in 2011, Djokovic became the sixth male player in the open era to win three Majors in a calendar year.

He is the first male player representing Serbia to win a Major singles title and the youngest player in the open era to have reached the semifinals of all four Grand Slam events, separately and consecutively. Amongst other titles, he won the Tennis Masters Cup in 2008 and was on the team which won the 2010 Davis Cup. He also won the bronze medal in singles at the Beijing Olympics in 2008. He has won 11 Masters 1000 series titles placing him joint fourth on the all time list. Djokovic has quickly moved up in the rankings of history. Tennis Channel ranked him number 40 , and former player Pat Cash said he is one of the greatest ever.