| Men's singles | |
|---|---|
| 2004 Adidas International | |
| Champion |  Lleyton Hewitt |
| Runner-up |  Carlos Moyá |
| Score | 4–3 (Moyá retired) |
| Draw | 32 |
| Seeds | 8 |
Hyung-Taik Lee was the defending champion but did not compete that year.
Lleyton Hewitt won the final 4–3 after Carlos Moyá was forced to retire.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
Juan Carlos Ferrero (first round)
Rainer Schüttler (first round) Carlos Moyá (final) Mark Philippoussis (quarterfinals)
Paradorn Srichaphan (second round)
Nicolás Massú (first round) Lleyton Hewitt (champion)
Martin Verkerk (semifinals)Defending champion Roger Federer defeated 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.
Lleyton Hewitt defeated Pete Sampras in the final, 7–6(7–4), 6–1, 6–1 to win the men's singles tennis title at the 2001 US Open. It was his first major title.
Andy Roddick defeated David Nalbandian in the final, 6–1, 6–3 to win the men's singles tennis title at the 2003 Canada Masters.
Guillermo Cañas defeated Andy Roddick in the final, 6–4, 7–5 to win the men's singles tennis title at the 2002 Canada Masters.
Andrei Pavel defeated Patrick Rafter in the final, 7–6(7–3), 2–6, 6–3 to win the men's singles tennis title at the 2001 Canadian Open.
Roger Federer defeated Andre Agassi in the final, 6–3, 6–0, 6–4 to win the singles tennis title at the 2003 Tennis Masters Cup. It was the first of an eventual record six Tour Finals titles for Federer.
Max Mirnyi was the defending champion but lost in the semifinals to Juan Carlos Ferrero.
Juan Carlos Ferrero defeated Carlos Moyá in the final, 7–5, 6–3, 6–4 to win the singles tennis title at the 2002 Monte Carlo Masters.
Marat Safin defeated Lleyton Hewitt in the final, 7–6(7–4), 6–0, 6–4 to win the singles tennis title at the 2002 Paris Masters. It was his second Paris Masters title.
Guillermo Coria defeated Agustín Calleri in the final, 6–3, 6–4, 6–4 to win the singles tennis title at the 2003 Hamburg European Open.
Roger Federer defeated Tim Henman in the final, 6–3, 6–3, to win the men's singles tennis title at the 2004 Indian Wells Masters.
Carlos Moyá defeated David Nalbandian in the final, 6–3, 6–3, 6–1 to win the men's singles tennis title at the 2004 Italian Open.
Roger Federer defeated the defending champion Guillermo Coria in the final, 4–6, 6–4, 6–2, 6–3 to win the singles tennis title at the 2004 Hamburg European Open.
Andre Agassi defeated Lleyton Hewitt in the final, 6–3, 3–6, 6–2 to win the men's singles tennis title at the 2004 Cincinnati Masters.
Marat Safin defeated Radek Štěpánek in the final, 6–3, 7–6(7–5), 6–3 to win the singles tennis title at the 2004 Paris Masters. It was his third Paris Masters title and 14th career singles title overall. Safin also became the first man to win the final two Masters tournaments of the season, after the Madrid Masters the week before.
Lleyton Hewitt was the defending champion and won in the final 6–4, 6–1 against Magnus Norman.
Lleyton Hewitt was the defending champion but did not compete that year.
Juan Carlos Ferrero was the defending champion but lost in the third round to Alberto Martín.
Lleyton Hewitt was the defending champion but lost in the quarterfinals to Paradorn Srichaphan.
Roger Federer was the defending champion but lost in the first round to Franco Squillari.
