title: 2001 AIG Japan Open Tennis Championships – Women's singles
text: # 2001 AIG Japan Open Tennis Championships – Women's singles
  
  Julie Halard-Decugis was the defending champion but did not compete this year, as she retired from professional tennis at the end of the 2000 season.
  
  First-seeded Monica Seles won the title by defeating second-seeded Tamarine Tanasugarn 6–3, 6–2 in the final.
  
  ## Seeds
  
  The top two seeds received a bye into the second round.
  
  * Monica Seles (champion)
  * Tamarine Tanasugarn (final)
  * Ai Sugiyama (semifinals)
  * Meilen Tu (first round)
  * Marlene Weingärtner (second round)
  * Rita Grande (quarterfinals)
  * Nathalie Dechy (second round)
  * Joannette Kruger (semifinals)
  
  ## Draw
  
  ### Key
  
  * Q = Qualifier
  * WC = Wild card
  * LL = Lucky loser
  * Alt = Alternate
  * SE = Special exempt
  * PR = Protected ranking
  * ITF = ITF entry
  * JE = Junior exempt
  * w/o = Walkover
  * r = Retired
  * d = Defaulted
  * SR = Special ranking
  
  ### Finals
  
  | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
  | - | - | - | - | - | - | - | - |
  | 1 | Monica Seles | 7 | 6 | | | | |
  | 3 | Ai Sugiyama | 5 | 4 | | | | |
  | 3 | Ai Sugiyama | 5 | 4 | 1 | Monica Seles | 6 | 6 |
  | | | | | 2 | Tamarine Tanasugarn | 3 | 2 |
  | 8 | Joannette Kruger | 3 | 5 | 2 | Tamarine Tanasugarn | 3 | 2 |
  | 2 | Tamarine Tanasugarn | 6 | 7 | | | | |
  
  ### Top half
  
  | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | | | | | | 1 | M Seles | 6 | 6 | | | | | | | | | |
  | | A Molik | 4 | $7^7$ | 5 | Q | Y-j Cho | 2 | 3 | | | | | | | | | |
  | Q | Y-j Cho | 6 | $6^3$ | 7 | | | | | | 1 | M Seles | 6 | 6 | | | | |
  | | R de los Ríos | 3 | 2 | | | | | | | 6 | R Grande | 1 | 2 | | | | |
  | | B Schwartz | 6 | 6 | | | B Schwartz | 4 | 4 | | | | | | | | | |
  | | T Pisnik | 7 | $6^3$ | 4 | 6 | R Grande | 6 | 6 | | | | | | | | | |
  | 6 | R Grande | 5 | $7^7$ | 6 | | | | | | | | | | 1 | M Seles | 7 | 6 |
  | 3 | A Sugiyama | 6 | 6 | | | | | | | | | | | 3 | A Sugiyama | 5 | 4 |
  | | Z Gubacsi | 4 | 1 | | 3 | A Sugiyama | 6 | 3 | 6 | | | | | | | | |
  | | Ľ Cervanová | 4 | 2 | | | K Srebotnik | 2 | 6 | 1 | | | | | | | | |
  | | K Srebotnik | 6 | 6 | | | | | | | 3 | A Sugiyama | 6 | 6 | | | | |
  | Q | Y-j Choi | 6 | 3 | 2 | | | | | | | P Nola | 1 | 4 | | | | |
  | | P Nola | 4 | 6 | 6 | | P Nola | 6 | 4 | $7^7$ | | | | | | | | |
  | | R McQuillan | 1 | 4 | | 7 | N Dechy | 3 | 6 | $6^5$ | | | | | | | | |
  | 7 | N Dechy | 6 | 6 | | | | | | | | | | | | | | |
  
  ### Bottom half
  
  | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 8 | J Kruger | 7 | 7 | | | | | | | | | | | | | | | |
  | | J Lee | 5 | 5 | | 8 | J Kruger | 4 | 6 | $7^7$ | | | | | | | | | |
  | | N Pratt | 6 | 6 | | | N Pratt | 6 | 3 | $6^3$ | | | | | | | | | |
  | WC | R Fujiwara | 2 | 4 | | | | | | | 8 | J Kruger | 0 | 6 | 6 | | | | |
  | | S Asagoe | 6 | $6^7$ | 4 | | | | | | | E Gagliardi | 6 | 4 | 1 | | | | |
  | | W Prakusya | 3 | $7^9$ | 6 | | W Prakusya | 3 | 6 | 5 | | | | | | | | | |
  | | E Gagliardi | 3 | 6 | 6 | | E Gagliardi | 6 | 1 | 7 | | | | | | | | | |
  | 4 | M Tu | 6 | 2 | 1 | | | | | | | | | | | 8 | J Kruger | 3 | 5 |
  | 5 | M Weingärtner | 3 | 7 | 6 | | | | | | | | | | | 2 | T Tanasugarn | 6 | 7 |
  | | E Dominikovic | 6 | 5 | 3 | 5 | M Weingärtner | 1 | 7 | 3 | | | | | | | | | |
  | Q | A Fusai | 3 | 2 | | WC | S Obata | 6 | 5 | 6 | | | | | | | | | |
  | WC | S Obata | 6 | 6 | | | | | | | WC | S Obata | 0 | 2 | | | | | |
  | Q | M Saeki | 6 | $6^3$ | 2 | | | | | | 2 | T Tanasugarn | 6 | 6 | | | | | |
  | | J Craybas | 0 | $7^7$ | 6 | | J Craybas | 4 | 6 | 3 | | | | | | | | | |
  | | | | | | 2 | T Tanasugarn | 6 | 4 | 6 | | | | | | | | | |
  