Defending champion Roger Federer successfully defended his title, defeating Andy Roddick in the final, 4–6, 7–5, 7–6(7–3), 6–4 to win the gentlemen's singles tennis title at the 2004 Wimbledon Championships. It was his second Wimbledon title and his third major title overall. This tournament marked the beginning of Federer's record streak of 23 consecutive major semifinals and 36 consecutive major quarterfinals.
Andre Agassi defeated Rainer Schüttler in the final, 6–2, 6–2, 6–1 to win the men's singles tennis title at the 2003 Australian Open. It was his fourth Australian Open title, and his eighth and last major title overall. With the win, Agassi claimed his 21st consecutive match win at the Australian Open, as he won the title in 2000 and 2001.
Thomas Enqvist was the defending champion but lost in the first round to Raemon Sluiter.
Fernando Vicente was the defending champion but lost in the first round to Mariano Zabaleta.
Mikhail Youzhny was the defending champion, but chose not to participate that year.
Carlos Moyà was the defending champion but lost in the first round to Fabrice Santoro.
Juan Carlos Ferrero was the defending champion but lost in the first round to Àlex Corretja.
Roger Federer was the defending champion, but withdrew due to fatigue, after winning the 2009 French Open.
Ivan Ljubičić defeated Andy Roddick in the final 7–6(7–3), 7–6(7–5), to win the men's singles title at the 2010 Indian Wells Masters. It was his first ATP Masters 1000 title, making him the oldest first-time champion of a Masters title. Until the 2014 Australian Open, this was the last occasion where a player other than the Big Four won a title when the Big Four were all competing.
Andy Murray was the defending champion, but lost to Mardy Fish in the second round.
Benjamin Becker was the defending champion, however he chose to compete in Rome instead.
Dudi Sela defeated Rainer Schüttler in the final. He defeated him 7–6(3), 6–3.
Patrick Rafter was the defending champion but did not compete that year.
Karol Beck was the defender of title, but he preferred playing in the ATP 250 tournament in Newport instead.
Rubén Ramírez Hidalgo won in the final against Roberto Bautista-Agut, 7–6(6), 6–4.
The 2011 Challenger of Dallas was a professional tennis tournament played on indoor hard courts. It was a Challenger of Dallas competition that forms part of the 2011 ATP Challenger Tour. It took place in Dallas, United States, between 28 February and 6 March 2011.
Juan Ignacio Chela was the defending champion, but could not defend his title since he withdrew from the tournament for personal reasons.
Ryan Sweeting claimed the title, defeating Kei Nishikori 6–4, 7–6(7–3) in the final match.
Brian Dabul is the defending champion but lost in the second round.
Donald Young won the title, defeating Wayne Odesnik 6–4, 3–6, 6–3 in the finals.
Roger Federer was the defending champion, but was forced to withdraw from the tournament before the semifinals because of a back injury. Following Federer's withdrawal, Stefan Edberg and Jo-Wilfried Tsonga played a one set exhibition match to make up the evening session.
Guillermo Coria was the defending champion, but did not participate this year.
Rainer Schüttler was the defending champion, but lost in the first round this year.
Roger Federer was the defending champion, but did not participate this year.
Alex Bogomolov Jr. 
Rainer Schüttler 
