Janko Tipsarević (Serbian Cyrillic: Јанко Типсаревић, Serbian pronunciation: [jâːŋkɔ tipsǎːrɛʋit͡ɕ]) (born 22 June 1984) is a Serbian tennis player. His career-high singles ranking is World No. 8, achieved on 2 April 2012. He is the 117th player in history to crack the top 10.

In his career, he has won two ATP tour championships, two Futures and nine tournaments in the ATP Challenger Series. Tipsarevic has also won the 2001 Australian Open Junior title.

Tipsarević has achieved two victories over a World No. 1 player, having defeated compatriot Novak Djokovic twice. He also has twelwe (12) victories against other players from the top 10, consisting of four wins against Tomáš Berdych, two against Andy Roddick, and one against Fernando González, Mikhail Youzhny, David Ferrer, James Blake, Gaël Monfils, and Andy Murray. He also has wins against former World No. 1 players, Carlos Moyá, Marat Safin, Lleyton Hewitt, and Juan Carlos Ferrero. Arguably his most notable matches to date are his third-round match at the 2008 Australian Open, where he lost to Roger Federer 7–6, 6–7, 7–5, 1–6, 8–10, & reaching the quarter-finals at the 2011 US Open, losing to eventual champion Novak Djokovic in four sets. He has also defeated former top-ten players Andy Roddick and Fernando González at Grand Slam level.

Tomáš Berdych (Czech pronunciation: [ˈtomaːʃ ˈbɛrdɪx]; born September 17, 1985, in Valašské Meziříčí) is a professional tennis player from the Czech Republic. His most notable achievements are reaching the final of the 2010 Wimbledon Championships, and the semi-finals of the 2010 French Open. He defeated the Croatian player Ivan Ljubičić in five sets to win the Paris Masters (which is a part of the ATP Masters 1000) in 2005. He has since reached the finals of the Miami Masters in 2010 and the Madrid Open in 2012, losing to Andy Roddick and Roger Federer, respectively. He reached a career high of World No. 6 on October 18, 2010.

Berdych turned pro in 2002, winning two Futures events, both in his country of the Czech Republic, in Czech F8 defeating Pavel Šnobel in the finals 6–2, 6–3, and in Czech F5 defeating Ladislav Chramosta 6–4, 6–3.

In 2003, Berdych won three Futures events in Great Britain F5 over Peter Clarke 6–1, 6–4, in the Challenger in Budaors, Hungary over Ivaylo Traykov 6–2, 6–3, and Challenger of Graz, Austria Julian Knowle 6–4, 5–7, 6–2. He also reached the final of Great Britain F1, losing to Wesley Moodie 6–7, 6–7. He also reached six other semifinals. He won his first ATP Tour match in the 2003 US Open over Tomas Behrend 5–7, 6–3, 6–2, 6–3, but lost in the next round to Juan Ignacio Chela 6–2, 1–6, 4–6, 3–6.

Vasek Pospisil (born June 23, 1990) is a Canadian professional tennis player. Pospisil has a No. 95 ATP career ranking high in singles and No. 115 in doubles. As Canada's No. 2 in singles and No. 3 in doubles, he is an important member of the Canada Davis Cup team.

Pospisil reached the final of his first ever junior International Tennis Federation event, the 2005 Canadian U18 ITF World Ranking Event, to compatriot Graeme Kassautzki. He and Kassautzki won the doubles event. Partnering another star junior Canadian, Milos Raonic, Pospisil won his second doubles title in December 2006, the Prince Cup in the United States. He also won back-to-back doubles titles in the Czech Republic in January–February, 2007, as well as the Guru Cup in Italy in April–May.

In singles, Pospisil won the ITF Flevoland Junior Championships in Holland in February, the 25th All-Canadian ITF Junior Championships in April, and the Canadian U18 ITF World Ranking Event, the last one without losing more than four games in any set.

Roger Federer (German pronunciation: [ˈfeːdəʁɐ]) (born 8 August 1981) is a Swiss professional tennis player who held the ATP No. 1 position for a record 237 consecutive weeks from 2 February 2004 to 18 August 2008. Federer has occupied the #1 ranking for 285 overall weeks, one week short of the record 286 weeks held by Pete Sampras. As of 28 May 2012, he is ranked World No. 3. Federer has won a men's record 16 Grand Slam singles titles. He is one of seven male players to capture the career Grand Slam and one of three (with Andre Agassi and Rafael Nadal) to do so on three different surfaces (clay, grass, and hard courts). He is the only male player in tennis history to have reached the title match of each Grand Slam tournament at least five times and also the final at each of the nine ATP Masters 1000 Tournaments. Many sports analysts, tennis critics, and former and current players consider Federer to be the greatest tennis player of all time.

Federer has appeared in an unprecedented 23 career Grand Slam tournament finals, including a men's record ten in a row, and appeared in 18 of 19 finals from the 2005 Wimbledon Championships through the 2010 Australian Open, the lone exception being the 2008 Australian Open. He holds the record of reaching the semifinals or better of 23 consecutive Grand Slam tournaments over five and a half years, from the 2004 Wimbledon Championships through the 2010 Australian Open. At the 2012 Australian Open, he reached a record 31st consecutive Grand Slam quarterfinal. During the course of his run at the 2012 French Open in Roland Garros, Federer eclipsed Jimmy Connors long standing record of 233 match wins in Grand Slam tournaments when he defeated Adrian Ungur in a second round match.

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.