| Doubles | |
|---|---|
| 2004 U.S. Men's Clay Court Championships | |
| Champions |  James Blake Mardy Fish |
| Runners-up | Rick Leach Brian MacPhie |
| Final score | 6–3, 6–4 |
Mark Knowles and Daniel Nestor were the defending champions but lost in the semifinals to James Blake and Mardy Fish.
Blake and Fish won in the final 6–3, 6–4 against Rick Leach and Brian MacPhie.
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
Bob Bryan / Mike Bryan (first round)
Mark Knowles / 
Daniel Nestor (semifinals) Rick Leach / Brian MacPhie (final)
Jordan Kerr / 
Tom Vanhoudt (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | B Bryan M Bryan | 67 | 6 | 5 | |||||||||||||||||||||||
 J Acasuso  I Karlović | 79 | 4 | 7 | J Acasuso I Karlović | 68 | 66 | |||||||||||||||||||||
 J Melzer A Peya | 2 | 3 | M García  L Horna | 710 | 78 | ||||||||||||||||||||||
| M García L Horna | 6 | 6 | M García L Horna | 3 | 4 | ||||||||||||||||||||||
| 3 | R Leach B MacPhie | 6 | 6 | 3 | R Leach B MacPhie | 6 | 6 | ||||||||||||||||||||
| WC | T Blake J Morrison | 4 | 4 | 3 | R Leach B MacPhie | 6 | 6 | ||||||||||||||||||||
| T Martin J Thomas | 77 | 6 | T Martin J Thomas | 1 | 1 | ||||||||||||||||||||||
T Perry  T Shimada | 64 | 4 | 3 | R Leach B MacPhie | 3 | 4 | |||||||||||||||||||||
| A Bogomolov Jr. T Dent | 4 | 77 | 2 | J Blake M Fish | 6 | 6 | |||||||||||||||||||||
| R Ginepri M Merklein | 6 | 65 | 6 | R Ginepri M Merklein | 3 | 2 | |||||||||||||||||||||
| J Blake M Fish | 6 | 77 | J Blake M Fish | 6 | 6 | ||||||||||||||||||||||
| 4 | J Kerr T Vanhoudt | 3 | 65 | J Blake M Fish | 4 | 6 | 77 | ||||||||||||||||||||
| D Bowen A Fisher | 1 | 1 | 2 | M Knowles D Nestor | 6 | 4 | 62 | ||||||||||||||||||||
| WC | D Ayala R Kendrick | 6 | 6 | WC | D Ayala R Kendrick | 2 | 4 | ||||||||||||||||||||
 S Aspelin J Landsberg | 77 | 4 | 2 | 2 | M Knowles D Nestor | 6 | 6 | ||||||||||||||||||||
| 2 | M Knowles D Nestor | 64 | 6 | 6 | |||||||||||||||||||||||
The 2001 Canada Masters doubles was the men's doubles event of the one hundred and twelfth edition of the Canada Masters; a WTA Tier I tournament and the most prestigious men's tennis tournament held in Canada. Sébastien Lareau and Daniel Nestor were the defending champions but they competed with different partners that year, Lareau with Justin Gimelstob and Nestor with Sandon Stolle. Gimelstob and Lareau lost in the first round to Mark Knowles and Brian MacPhie, as did Nestor and Stolle to Jan-Michael Gambill and Simon Larose. Jiří Novák and David Rikl won in the final 6–4, 3–6, 6–3 against Donald Johnson and Jared Palmer.
Jonas Björkman and Todd Woodbridge were the defending champions, but lost in the second round to Tomáš Cibulec and Daniel Vacek.
Donald Johnson and Piet Norval were the defending champions but only Johnson competed that year with Jared Palmer.
Jiří Novák and David Rikl were the defending champions but lost in the second round to Chris Haggard and Tom Vanhoudt.
Jonas Björkman and Todd Woodbridge were the defending champions but lost in the final 6–2, 6–4 against Mahesh Bhupathi and Jan-Michael Gambill.
Mark Knowles and Brian MacPhie were the defending champions but they competed with different partners that year, Knowles with Daniel Nestor and MacPhie with Nenad Zimonjić.
Ellis Ferreira and Rick Leach were the defending champions but they competed with different partners that year, Ferreira with Pavel Vízner and Leach with Brian MacPhie.
Ellis Ferreira and Rick Leach were the defending champions but they competed with different partners that year, Ferreira with Pavel Vízner and Leach with Brian MacPhie.
Hyung-Taik Lee and Vladimir Voltchkov were the defending champions but only Lee competed that year with Brian Vahaly.
Jared Palmer and Richey Reneberg were the defending champions but only Reneberg competed that year with Jim Grabb.
Tommy Ho and Brett Steven were the defending champions but only Steven competed that year with Sandon Stolle.
Todd Woodbridge and Mark Woodforde were the defending champions and won in the final 6–1, 6–3 against Ellis Ferreira and Patrick Galbraith.
Mark Knowles and Daniel Nestor were the defending champions but lost in the second round to Joshua Eagle and Andrew Florent.
Trevor Kronemann and David Macpherson were the defending champions but lost in the semifinals to Mark Knowles and Daniel Nestor.
Bob Bryan and Mike Bryan were the defending champions, but did not participate this year.
Donald Johnson and Jared Palmer were the defending champions, but lost in the semifinals to Jonas Björkman and Todd Woodbridge.
Todd Woodbridge and Mark Woodforde were the defending champions, but Woodforde had retired from the tour. Woodbridge partnered with Jonas Björkman but lost in the third round to Bob and Mike Bryan.
Mahesh Bhupathi and Leander Paes were the defending champions, but did not participate together. Paes played with Tomáš Cibulec but they lost in the semifinals to Mark Knowles and Daniel Nestor. Bhupathi partnered with Max Mirnyi but they lost in semifinals to Paul Haarhuis and Yevgeny Kafelnikov.
The 2001 French Open was the second Grand Slam event of 2001 and the 100th edition of the French Open. It took place at the Stade Roland Garros in Paris, France, from late May through early June, 2001.
The 2001 US Open was held between August 27 – September 9, 2001. It was the final Grand Slam event of 2001.