Sam Austin Querrey (born October 7, 1987) is a professional American tennis player from Thousand Oaks, California currently living in Las Vegas, Nevada. His current ATP rank is 71, with a career high rank of #17, achieved on January 31, 2011. His height allows him to play with a strong serve and forehand. Querrey holds the record for most consecutive service aces since the ATP began keeping records of those statistics, with 10 in a 2007 match against James Blake. His regular doubles partner is fellow American John Isner.

Many tennis experts, including Davis Cup Captain Patrick McEnroe, have touted Querrey as America's next great talent.^{[citation needed]}

Querrey turned down a scholarship offer from USC to turn pro. His father Mike Querrey recommended that his son try making it in tennis, as he often regretted his own decision to go to the University of Arizona rather than play baseball for the Detroit Tigers which had drafted him. Sam Querrey said that going pro was "one of the toughest decisions of my life."

Ernests Gulbis (pronounced [ˈærnəsts ˈɡulbis], born August 30, 1988) is a Latvian professional tennis player. In 2008, Gulbis won his first ATP Tour doubles title at the U.S. Men's Clay Court Championships, teaming with Rainer Schüttler, and in 2010 won his first ATP Tour singles title in the Delray Beach, defeating Ivo Karlović in the final. He won his second in July, 2011, by defeating Mardy Fish in the final of the 2011 Farmers Classic tournament, held in Los Angeles. His career highlights also include a 4th round appearance at the 2007 US Open and a quarterfinal appearance at the 2008 French Open, as well as several other ATP World Tour semifinal appearances.

Gulbis' professional training in tennis began at the age of 12, when he was enrolled at the Niki Pilić Tennis Academy in Croatia. Beginning after Wimbledon 2011, Gulbis is being coached by Guillermo Cañas. Previously, he was coached by Hernán Gumy (who before that was Marat Safin's coach), but their partnership ended due to Gumy's schedule; during that time, Darren Cahill served as Gulbis' consultant for several tournaments. Before Gumy, Ernests was coached by Karl Heinz Wetter and subsequently Nikola Pilić, the former professional Croatian tennis player and Croatian and German Davis Cup captain.

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.

Marinko Matosevic (Croatian: Marinko Matošević) (born 8 August 1985) is a professional Croatia-Australian tennis player. His highest ATP singles ranking is No. 89, which he reached on May 21, 2012. His career high ranking in doubles was No. 541, set on September 28, 2009.

Matosevic was born in Jajce, SR Bosnia and Herzegovina, Yugoslavia. He emigrated to Australia in his childhood and competes for his adopted country.

From the age of 13 Marinko trained under Jay Salter at the Universal Tennis Academy in Melbourne, Australia.

Matosevic currently has five futures titles and two ATP Challenger titles to his credit. His biggest title was in July 2010 at the $75,000 Comerica Bank Challenger in Aptos, California where, in a heated match with American Donald Young, he won the title in straight sets.

In January 2010 he played his first Grand Slam match in Melbourne at the Australian Open and lost in the first round.

He entered the 2010 BNP Paribas Open, in Indian Wells as a qualifier. He beat Michael Llodra 6–3, 6–0 in the first round before losing out to #9 seed Tsonga 1–6, 3–6.

James Riley Blake (born December 28, 1979) is an American professional tennis player. Blake is known for his speed and powerful, flat forehand. As of April 2012, Blake is ranked World No. 74 among active male players with 24 career finals appearances (10–14 record), whilst his career-high singles ranking is World No. 4. His career highlights include reaching the final of the 2006 Tennis Masters Cup, the semifinals of the Beijing Olympics and the quarterfinals of the Australian Open (2008) and US Open (2005, 2006). His two titles for the United States at the Hopman Cup are an event record. Blake was a key performer for the United States 2007 Davis Cup championship team, going 2–0 in the championship tie vs. Russia at second singles. In 2005, Blake was presented with the Comeback Player of the Year award for his remarkable return to the tour. Later, in 2008, Blake was awarded another honor by the ATP where he was named the Arthur Ashe Humanitarian of the Year. On July 3, 2007, Blake's autobiography Breaking Back: How I Lost Everything and Won Back My Life, which discussed his comeback after his unlucky 2004 season, was released and debuted at No. 22 on the New York Times Best Seller list. He co-wrote this book with Andrew Friedman.