| Doubles | |
|---|---|
| 2004 BA-CA-TennisTrophy | |
| Champions |  Martin Damm Cyril Suk |
| Runners-up |  Gastón Etlis Martín Rodríguez |
| Score | 6–7(4–7), 6–4, 7–6(7–4) |
| Draw | 16 |
| Seeds | 4 |
Yves Allegro and Roger Federer were the defending champions, but did not participate this year.
Martin Damm and Cyril Suk won the title, defeating Gastón Etlis and Martín Rodríguez 6–7(4–7), 6–4, 7–6(7–4) in the final.
Mark Knowles / 
Daniel Nestor (semifinals)
Leander Paes / David Rikl (quarterfinals) Gastón Etlis / Martín Rodríguez (final)
Julian Knowle / 
Nenad Zimonjić (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | M Knowles D Nestor | 6 | 6 | ||||||||||||||||||||||||
| Alt |  R de Voest W Moodie | 2 | 3 | 1 | M Knowles D Nestor | 6 | 7 | ||||||||||||||||||||
C Haggard  P Hanley | 6 | 4 | 6 | C Haggard P Hanley | 4 | 5 | |||||||||||||||||||||
| L Arnold M Hood | 4 | 6 | 4 | 1 | M Knowles D Nestor | 4 | 5 | ||||||||||||||||||||
| 3 | G Etlis M Rodríguez | 7 | 7 | 3 | G Etlis M Rodríguez | 6 | 7 | ||||||||||||||||||||
| WC |  T Haas S Koubek | 5 | 5 | 3 | G Etlis M Rodríguez | 6 | 4 | 77 | |||||||||||||||||||
 A Costa F López | 78 | 77 | A Costa F López | 2 | 6 | 63 | |||||||||||||||||||||
| G Cañas JI Chela | 66 | 63 | 3 | G Etlis M Rodríguez | 77 | 4 | 64 | ||||||||||||||||||||
F Mayer  R Wassen | 4 | 1 | M Damm C Suk | 64 | 6 | 77 | |||||||||||||||||||||
| WC | J Melzer A Peya | 6 | 6 | WC | J Melzer A Peya | ||||||||||||||||||||||
 L Horna  N Massú | 77 | 6 | L Horna N Massú | w/o | |||||||||||||||||||||||
| 4 | J Knowle N Zimonjić | 63 | 4 | L Horna N Massú | |||||||||||||||||||||||
 J Palmer P Vízner | 5 | 77 | 4 | M Damm C Suk | w/o | ||||||||||||||||||||||
| M Damm C Suk | 7 | 64 | 6 | M Damm C Suk | 7 | 4 | 6 | ||||||||||||||||||||
| T Dent R Ginepri | 4 | 3 | 2 | L Paes D Rikl | 5 | 6 | 3 | ||||||||||||||||||||
| 2 | L Paes D Rikl | 6 | 6 | ||||||||||||||||||||||||
Michaël Llodra and Fabrice Santoro were the defending champions, but they lost in quarterfinals 6–7(2), 5–7, against Jonas Björkman and Max Mirnyi.
Jonas Björkman and Todd Woodbridge were the defending champions, but lost in the third round to Leander Paes and David Rikl.
Defending champions Bob Bryan and Mike Bryan successfully defended their title, defeating Wayne Black and Kevin Ullyett in the final, 4–6, 7–5, 6–4, 6–2 to win the doubles tennis title at the 2004 Tennis Masters Cup.
Michaël Llodra and Fabrice Santoro were the defending champions, and won the final 7–6(4), 6–3 against Bob and Mike Bryan.
Lucas Arnold and Tomás Carbonell were the defending champions but only Arnold competed that year with Luis Lobo.
Gastón Etlis and Martín Rodríguez were the defending champions but lost in the first round to Agustín Calleri and Mariano Hood.
Wayne Black and Kevin Ullyett were the defending champions but lost in the first round to Arnaud Clément and Sébastien Grosjean.
Lucas Arnold and Mariano Hood were the defending champions but only Hood competed that year with Sebastián Prieto.
Mahesh Bhupathi and Max Mirnyi were the defending champions but lost in the quarterfinals to Gastón Etlis and Martín Rodríguez.
Mark Knowles and Daniel Nestor were the defending champions, but lost in the semifinals this year.
Gastón Etlis and Martín Rodríguez were the defending champions, but did not participate together this year. Etlis did not participate this year. Rodríguez partnered Fernando González and they won the title, defeating Lucas Arnold and Mariano Hood 6–4, 6–4 in the final.
Jonathan Erlich and Andy Ram were the defending champions and successfully defended their title, defeating Jonas Björkman and Radek Štěpánek 7–6(7–2), 6–2 in the final.
Juan Ignacio Chela and Gastón Gaudio were the defending champions, but did not participate this year.
Mark Knowles and Daniel Nestor were the defending champions.
Mark Knowles and Daniel Nestor were the defending champions, but did not participate this year.
Martin Damm and Cyril Suk were the defending champions, but Damm did not participate this year. Suk partnered Pavel Vízner, losing in the semifinals.
Mark Knowles and Daniel Nestor were the defending champions, but lost in the first round to Paul Goldstein and Jim Thomas.
Gastón Etlis and Martín Rodríguez were the defending champions, but did not compete this year.
Mark Knowles and Daniel Nestor were the defending champions, but lost in Quarterfinals to Wayne Black and Kevin Ullyett.
Bob Bryan and Mike Bryan were the defending champions but did not compete that year.