| Doubles | |
|---|---|
| 2000 Qatar Open | |
| Champions |  Mark Knowles  Max Mirnyi |
| Runners-up |  Alex O'Brien Jared Palmer |
| Score | 6–3, 6–4 |
| Draw | 16 |
| Seeds | 4 |
Alex O'Brien and Jared Palmer were the defending champions.
Mark Knowles and Max Mirnyi won in the final 6–3, 6–4, against O'Brien and Palmer.
Alex O'Brien / Jared Palmer (final)
David Adams / John-Laffnie de Jager (semifinals) Jeff Tarango / 
Daniel Vacek (quarterfinals)
Olivier Delaître / Fabrice Santoro (semifinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | A O'Brien J Palmer | 63 | 7 | 6 | |||||||||||||||||||||||
 A Olhovskiy  J Siemerink | 77 | 5 | 4 | 1 | A O'Brien J Palmer | 6 | 6 | ||||||||||||||||||||
 M Tillström  N Zimonjić | 77 | 6 | M Tillström N Zimonjić | 2 | 2 | ||||||||||||||||||||||
| Q |  L Burgsmüller S Schalken | 62 | 3 | 1 | A O'Brien J Palmer | 6 | 77 | ||||||||||||||||||||
| 4 | O Delaître F Santoro | 3 | 6 | 6 | 4 | O Delaître F Santoro | 2 | 60 | |||||||||||||||||||
| WC | L Jensen M Jensen | 6 | 3 | 1 | 4 | O Delaître F Santoro | 6 | 61 | 77 | ||||||||||||||||||
| WC |  G Ivanišević N Kiefer | 6 | 0 | 62 |  D Macpherson P Nyborg | 4 | 77 | 62 | |||||||||||||||||||
| D Macpherson P Nyborg | 2 | 6 | 77 | 1 | A O'Brien J Palmer | 3 | 4 | ||||||||||||||||||||
| M Knowles M Mirnyi | 6 | 6 | M Knowles M Mirnyi | 6 | 6 | ||||||||||||||||||||||
| M Barnard C Haggard | 4 | 4 | M Knowles M Mirnyi | 6 | 6 | ||||||||||||||||||||||
L Bale  A Kitinov | 68 | 4 | 3 | J Tarango D Vacek | 3 | 4 | |||||||||||||||||||||
| 3 | J Tarango D Vacek | 710 | 6 | M Knowles M Mirnyi | 2 | 6 | 6 | ||||||||||||||||||||
| J Novák C Suk | 63 | 7 | 6 | 2 | D Adams J-L de Jager | 6 | 3 | 4 | |||||||||||||||||||
| WC |  H Arazi  T Vanhoudt | 77 | 5 | 4 | J Novák C Suk | 3 | 7 | 4 | |||||||||||||||||||
 T Carbonell J Sánchez | 3 | 4 | 2 | D Adams J-L de Jager | 6 | 5 | 6 | ||||||||||||||||||||
| 2 | D Adams J-L de Jager | 6 | 6 | ||||||||||||||||||||||||
Donald Johnson and Piet Norval defeated Mahesh Bhupathi and Leander Paes in the final, 7–6(10–8), 6–3, 6–4 to win the doubles tennis title at the 2000 ATP Tour World Championships.
Sébastien Lareau and Alex O'Brien defeated Mahesh Bhupathi and Leander Paes in the final, 6–3, 6–2, 6–2 to win the doubles tennis title at the 1999 ATP Tour World Championships.
Sébastien Lareau and Alex O'Brien were the defending champions but they competed with different partners that year, Lareau with Daniel Nestor and O'Brien with Jared Palmer.
Justin Gimelstob and Sébastien Lareau were the defending champions but only Gimelstob competed that year with Jared Palmer.
Jared Palmer and Richey Reneberg were the defending champions but only Palmer competed that year with Donald Johnson.
Alex O'Brien and Jared Palmer were the defending champions but they competed with different partners that year, O'Brien with Sébastien Lareau and Palmer with Byron Black.
Jacco Eltingh and Paul Haarhuis were the defending champions, but did not participate this year.
Martin Damm and Cyril Suk were the defending champions, but lost in the semifinals this year.
Daniel Nestor and Kevin Ullyett won in the final 7–6(7–5), 7–5 against Thomas Shimada and Myles Wakefield.
Mahesh Bhupathi and Leander Paes defeated the defending champion Paul Haarhuis and his partner Jared Palmer in the final, 6–7(10–12), 6–3, 6–4, 7–6(7–4), to win the gentlemen's doubles title at the 1999 Wimbledon Championships.
Byron Black and Jonathan Stark were the defending champions, but lost in the final this year.
Mahesh Bhupathi and Leander Paes were the defending champions. Bhupathi partnered Andrew Florent this year, losing in the second round. Paes did not participate this year.
Sébastien Lareau and Alex O'Brien were the defending champions. Lareau did not participate this year. O'Brien partnered Jared Palmer, losing in the semifinals.
Mahesh Bhupathi and Leander Paes were the defending champions, but lost in the first round this year.
Patrick McEnroe and Jared Palmer were the defending champions, but did not participate this year.
Lleyton Hewitt and Max Mirnyi defeated Ellis Ferreira and Rick Leach in the final, 6–4, 5–7, 7–6 to win the men's doubles tennis title at the 2000 US Open. It was their maiden major title.
Justin Gimelstob and Sébastien Lareau were the defending champions, but none competed this year.
Sébastien Lareau and Alex O'Brien were the defending champions, but lost in quarterfinals to Andrei Olhovskiy and David Prinosil.
Andre Agassi and Petr Korda were the defending champions, but Agassi did not compete this year. Korda teamed up with Stefan Edberg and lost in second round to Cyril Suk and Daniel Vacek.
Byron Black and Jonathan Stark were the defending champions, but Black did not compete this year. Stark teamed up with Todd Martin and lost in the quarterfinals to Mark Knowles and Daniel Nestor.