| Singles | |
|---|---|
| 2005 Mercedes-Benz Cup | |
| Champion |  Andre Agassi |
| Runner-up |  Gilles Müller |
| Final score | 6–4, 7–5 |
| Draw | 32 (4 Q / 3 WC ) |
| Seeds | 8 |
Tommy Haas was the defending champion, but lost in the second round this year.
Andre Agassi won the tournament, beating Gilles Müller in the final, 6–4, 7–5.
Andre Agassi (champion)
Dominik Hrbatý (semifinals)
Nicolas Kiefer (first round, retired due to a throat infection) Tommy Haas (second round) Taylor Dent 
Mario Ančić (first round)
Sébastien Grosjean (first round)
Greg Rusedski Vincent Spadea (first round)| Semifinals | Final | ||||||||||||
| 1 | Andre Agassi | 6 | 6 | ||||||||||
 Juan Ignacio Chela | 4 | 2 | |||||||||||
| 1 | Andre Agassi | 6 | 7 | ||||||||||
| Gilles Müller | 4 | 5 | |||||||||||
| Gilles Müller | 4 | 77 | 6 | ||||||||||
| 2 | Dominik Hrbatý | 6 | 64 | 1 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | A Agassi | 6 | 6 | ||||||||||||||||||||||||
| LL | J-R Lisnard | 1 | 0 | 1 | A Agassi | 6 | 7 | ||||||||||||||||||||
 K Carlsen | 62 | 77 | 4 | K Kim | 2 | 5 | |||||||||||||||||||||
| K Kim | 77 | 63 | 6 | 1 | A Agassi | 6 | 4 | 6 | |||||||||||||||||||
| WC | P Goldstein | 6 | 6 |  P Srichaphan | 2 | 6 | 4 | ||||||||||||||||||||
| C Saulnier | 4 | 4 | WC | P Goldstein | 1 | 4 | |||||||||||||||||||||
| P Srichaphan | 78 | 64 | 6 | P Srichaphan | 6 | 6 | |||||||||||||||||||||
| 6 | M Ančić | 66 | 77 | 2 | 1 | A Agassi | 6 | 6 | |||||||||||||||||||
| 4 | T Haas | 6 | 6 | JI Chela | 4 | 2 | |||||||||||||||||||||
| I Karlović | 4 | 4 | 4 | T Haas | 6 | 3 | 4 | ||||||||||||||||||||
 X Malisse | 6 | 6 | X Malisse | 1 | 6 | 6 | |||||||||||||||||||||
 H-t Lee | 3 | 4 | X Malisse | 4 | 63 | ||||||||||||||||||||||
| JI Chela | 67 | 6 | 6 | JI Chela | 6 | 77 | |||||||||||||||||||||
 M Baghdatis | 79 | 3 | 4 | JI Chela | 3 | 6 | 6 | ||||||||||||||||||||
| LL |  N Okun | 1 | 2 | LL |  D Tursunov | 6 | 4 | 2 | |||||||||||||||||||
| LL | D Tursunov | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 9 | V Spadea | 6 | 2 | 4 | |||||||||||||||||||||||
| Q | Z Fleishman | 4 | 6 | 6 | Q | Z Fleishman | 3 | 5 | |||||||||||||||||||
| G Müller | 2 | 6 | 78 | G Müller | 6 | 7 | |||||||||||||||||||||
| Q | S de Chaunac | 6 | 3 | 66 | G Müller | 77 | 7 | ||||||||||||||||||||
| R Ginepri | 6 | 6 | R Ginepri | 65 | 5 | ||||||||||||||||||||||
 W Arthurs | 4 | 4 | R Ginepri | 6 | 77 | ||||||||||||||||||||||
| WC | J Blake | 3 | WC | J Blake | 3 | 62 | |||||||||||||||||||||
| 3 | N Kiefer | 2r | G Müller | 4 | 77 | 6 | |||||||||||||||||||||
| 7 | S Grosjean | 6 | 2 | 3 | 2 | D Hrbatý | 6 | 64 | 1 | ||||||||||||||||||
 R Mello | 1 | 6 | 6 | R Mello | 6 | 6 | |||||||||||||||||||||
| Q | A Hadad | 2 | 6 | 6 | Q | A Hadad | 3 | 1 | |||||||||||||||||||
| WC | C Mamiit | 6 | 3 | 3 | R Mello | 6 | 69 | 2 | |||||||||||||||||||
| Q |  J Björkman | 4 | 4 | 2 | D Hrbatý | 4 | 711 | 6 | |||||||||||||||||||
 J Hernych | 6 | 6 | J Hernych | 4 | 2 | ||||||||||||||||||||||
| K Beck | 4 | 1 | 2 | D Hrbatý | 6 | 6 | |||||||||||||||||||||
| 2 | D Hrbatý | 6 | 6 | ||||||||||||||||||||||||
Defending champion Roger Federer defeated Andre Agassi in the final, 6–3, 2–6, 7–6(7–1), 6–1 to win the men's singles tennis title at the 2005 US Open. It was his second US Open title and sixth major title overall. This was Agassi's last appearance in a major final.
Andre Agassi defeated Todd Martin in the final, 6–4, 6–7(5–7), 6–7(2–7), 6–3, 6–2 to win the men's singles tennis title at the 1999 US Open. With the win, he returned to the world No. 1 singles ranking, and helped end Pete Sampras' streak of six year-end No. 1 rankings.
Rafael Nadal defeated Mariano Puerta in the final, 6–7(6–8), 6–3, 6–1, 7–5 to win the men's singles tennis title at the 2005 French Open. It was his first major title, the first of a record 14 French Open titles, and the first of a record 22 major men's singles titles overall. Nadal won the French Open on his tournament debut, the first man to do so since Mats Wilander in 1982, and was the youngest champion since Michael Chang in 1989, at 19 years and two days old when he won the title.
Thomas Johansson defeated Marat Safin in the final, 3–6, 6–4, 6–4, 7–6(7–4) to win the men's singles tennis title at the 2002 Australian Open. Johansson became the first Swede to win the title since Mats Wilander in 1988.
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.
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.
Andre Agassi was the defending champion, but retired from his semifinals match this year.
Francisco Clavet was the defending champion but lost in the first round to Andre Agassi.
Marcelo Ríos defeated Andre Agassi in the final, 7–5, 6–3, 6–4 to win the men's singles tennis title at the 1998 Miami Open. With the win, he completed the Sunshine Double.
Gustavo Kuerten won the singles tennis title at the 1999 Monte Carlo Open when Marcelo Ríos retired from the final with the scoreline at 6–4, 2–1.
Andre Agassi defeated Marat Safin in the final, 7–6(7–1), 6–2, 4–6, 6–4 to win the singles tennis title at the 1999 Paris Open.
Lleyton Hewitt defeated Tim Henman in the final, 6–1, 6–2 to win the men's singles tennis title at the 2002 Indian Wells Masters.
Andre Agassi won the inaugural singles tennis title at the 2002 Madrid Open after Jiří Novák withdrew from the final.
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.
Roger Federer defeated Rafael Nadal in the final, 2–6, 6–7(4–7), 7–6(7–5), 6–3, 6–1 to win the men's singles tennis title at the 2005 Miami Open. It was the first of 24 tournament-final matches between the pair. Federer completed the Sunshine Double with the win; it would be the first of three Sunshine Doubles in his career.
Michael Chang was the defending champion but lost in the second round to Pete Sampras.
Andre Agassi was the defending champion and won in the final 6–2, 6–4 against Jan-Michael Gambill.
Yevgeny Kafelnikov was the defending champion, but did not take part in 1999.
Andre Agassi was the defending champion, but lost in the quarterfinals this year.