2003 AIG Japan Open Tennis Championships – Men's doubles
| Men's doubles | |
|---|---|
| 2003 AIG Japan Open Tennis Championships | |
| Champions |  Justin Gimelstob  Nicolas Kiefer |
| Runners-up | Scott Humphries  Mark Merklein |
| Score | 6–7(6–8), 6–3, 7–6(7–4) |
Jeff Coetzee and Chris Haggard were the defending champions but lost in the first round to Jiří Novák and Petr Pála.
Justin Gimelstob and Nicolas Kiefer won in the final 6–7(6–8), 6–3, 7–6(7–4) against Scott Humphries and Mark Merklein.
Seeds
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Wayne Arthurs / Paul Hanley (first round)
Jeff Coetzee / Chris Haggard (first round)- Rick Leach / Brian MacPhie (quarterfinals)
Jonathan Erlich / Andy Ram (first round)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- ITF = ITF entry
- PR = Protected ranking
- SR = Special ranking
- SE = Special exempt
- JE = Junior exempt
- JR = Junior Accelerator Programme entrant
- CO = College Accelerator Programme entrant
- NG = Next Gen Accelerator Program entrant
- w/o = Walkover
- r = Retired
- d = Defaulted
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | W Arthurs P Hanley
| 4 | 4 | ||||||||||||||||||||||||
| WC |  S Iwabuchi J Kato
| 6 | 6 | WC | S Iwabuchi J Kato
| 6 | 6 | ||||||||||||||||||||
| J-M Gambill B Vahaly
| 63 | 65 | .svg.png){kind=small} Y Allegro P Luxa
| 2 | 2 | ||||||||||||||||||||||
| Y Allegro P Luxa
| 77 | 77 | WC | S Iwabuchi J Kato
| 3 | 4 | |||||||||||||||||||||
| 4 | J Erlich A Ram
| 1 | 6 | 611 | J Gimelstob N Kiefer
| 6 | 6 | ||||||||||||||||||||
| T Perry J Thomas
| 6 | 4 | 713 | T Perry J Thomas
| 4 | 3 | |||||||||||||||||||||
| J Gimelstob N Kiefer
| 6 | 7 | J Gimelstob N Kiefer
| 6 | 6 | ||||||||||||||||||||||
A Kratzmann J van Lottum
| 2 | 5 | J Gimelstob N Kiefer
| 66 | 6 | 77 | |||||||||||||||||||||
| L Burgsmüller R Schüttler
| 3 | 4 | S Humphries M Merklein
| 78 | 3 | 64 | |||||||||||||||||||||
| S Humphries M Merklein
| 6 | 6 | S Humphries M Merklein
| 6 | 77 | ||||||||||||||||||||||
| J Kerr M Wakefield
| 4 | 6 | 3 | 3 | R Leach B MacPhie
| 3 | 63 | ||||||||||||||||||||
| 3 | R Leach B MacPhie
| 6 | 3 | 6 | S Humphries M Merklein
| 2 | 6 | 6 | |||||||||||||||||||
 M García G Oliver
| 6 | 5 | 77 | J Novák P Pála
| 6 | 2 | 3 | ||||||||||||||||||||
| WC | T Shimada T Suzuki
| 4 | 7 | 63 | M García G Oliver
| 4 | 1 | ||||||||||||||||||||
| J Novák P Pála
| 6 | 7 | J Novák P Pála
| 6 | 6 | ||||||||||||||||||||||
| 2 | J Coetzee C Haggard
| 2 | 5 | ||||||||||||||||||||||||