Omori Ran
Omori Ran (大森らん) has a rating of 1381, ranked 357 of 452 in professional play. Their highest rating so far is 1519 (May 13, 2019).
- 2026 record
- 8-11
- Record since 1927
- 52-91
- Win rate
- .364
The rating is calculated from published game results. It does not include any adjustment for playing Black.
Professional ratingsFind a player
Rating history — professional
The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.
Rating history in the women's tournaments pool (for reference)
The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.
Ratings in other pools
Ratings for general play and for women's tournaments are calculated independently and do not affect each other.
- Women's tournaments: 1634 (#27)
Recent games
| Date | Opponent and tournament | Result | Change |
|---|---|---|---|
| September 17, 2026 | Kato ChieWomen's Kisei Preliminary A as White | Loss | ↓6 |
| September 17, 2026 | Kim HyunjongWomen's Kisei Preliminary B as White | Win | ↑8 |
| August 27, 2026 | Suzukawa NatsumiWomen's Kisei Colors unknown | Win | ↑11 |
| August 27, 2026 | O KeiiWomen's Kisei Colors unknown | Win | ↑21 |
| August 10, 2026 | Takao MariHiroshima Aluminum Cup Wakagoi Preliminary Round 1 Colors unknown | Loss | ↓11 |
| July 13, 2026 | Yamada ShihoOza Colors unknown | Loss | ↓17 |
| May 11, 2026 | Utani ShuntaOza Colors unknown | Win | ↑24 |
| April 29, 2026 | Takao MariFumakilla Women's Go Brains Match Round 1 as Black | Loss | ↓8 |
| April 27, 2026 | Hoshiai ShihoSenko Cup Women's Strongest Player Round 1 as Black | Loss | ↓5 |
| April 9, 2026 | Takabayashi MasahiroHoninbo Colors unknown | Loss | ↓12 |
| April 2, 2026 | Yamada ShihoTengen Colors unknown | Loss | ↓21 |
| March 26, 2026 | Tanemura SayuriSenko Cup Women's Strongest Player Preliminary Final Colors unknown | Win | ↑10 |
| March 16, 2026 | Tsukuda AkikoGosei Preliminary C as White | Loss | ↓20 |
| March 12, 2026 | Kasahara YukiJudan Colors unknown | Loss | ↓13 |
| February 26, 2026 | Tsuruta KazushiKisei First Tournament Preliminary Round 2 Colors unknown | Loss | ↓2 |
| February 12, 2026 | Ishida AtsushiKisei First Tournament Preliminary Round 1 Colors unknown | Win | ↑26 |
| February 9, 2026 | Furuta NaoyoshiJudan Colors unknown | Win | ↑7 |
| February 5, 2026 | Asano YasukoSenko Cup Women's Strongest Player Preliminary Semifinal Colors unknown | Win | ↑6 |
| January 22, 2026 | Kondo ToshikiShinjin-O Preliminary Final Colors unknown | Loss | ↓5 |
| December 24, 2025 | Omote YutoTeikei Cup Shun-ei League as White | Loss | ↓2 |
Head-to-head
| Opponent | Total | As Black | As White |
|---|---|---|---|
| Kim Hyunjong | 7-2.778 | 0-0 | 1-0 |
| Hane Ayaka | 1-6.143 | 0-2 | 0-1 |
| Tsukuda Akiko | 2-5.286 | 0-1 | 0-1 |
| Iwata Saeka | 3-4.429 | 0-1 | 0-0 |
| Kirimoto Kazuo | 5-1.833 | 0-0 | 0-0 |
| O Keii | 3-2.600 | 0-0 | 0-0 |
| Sasaka Shiro | 1-4.200 | 0-0 | 0-0 |
| Furuta Naoyoshi | 5-01.000 | 0-0 | 0-0 |
| Takao Mari | 0-5.000 | 0-1 | 0-1 |
| Tamura Chiaki | 4-1.800 | 0-0 | 0-0 |
| Tsukada Chiharu | 2-3.400 | 0-0 | 0-1 |
Record by year
Counted by calendar year, January to December (default wins and losses are included; jigo and no-result games are not). Only games from 1927 onward are counted, so these totals do not match the career records published by the two Ki-in.
| Year | Record | Win rate |
|---|---|---|
| 2026 | 8-11 | .421 |
| 2025 | 18-23 | .439 |
| 2024 | 17-16 | .515 |
| 2023 | 11-17 | .393 |
| 2022 | 15-24 | .385 |
| 2021 | 19-17 | .528 |
| 2020 | 11-16 | .407 |
| 2019 | 8-10 | .444 |
| Total | 52-91 | .364 |
Calculated from games played between 1927 and 2026 (as of September 17, 2026).