Sekine Naohisa
Sekine Naohisa (関根直久) has a rating of 1358.
Retired. The rating shown is the rating at retirement.
Sekine Naohisa関根直久Nihon Ki-in
Rating1358
Rank—
1-year change—
Peak rating—
Last 10LossLossLossWinLossLossLossLossLossLoss1-14
- 1988 record
- 0-1
- Record since 1927
- 1-14
- Win rate
- .067
Rating at retirement (not included in the rating list)
The rating is calculated from published game results. It does not include any adjustment for playing Black.
Professional ratingsFind a player
Recent games
| Date | Opponent and tournament | Result | Change |
|---|---|---|---|
| May 12, 1988 | Ohira ShuzoGosei Preliminary as Black | Loss | ↓2 |
| May 2, 1985 | Ohira ShuzoHoninbo 2nd Preliminary as White | Loss | ↓3 |
| October 15, 1981 | Sakata EioTengen 2nd Preliminary as Black | Loss | ↓2 |
| November 13, 1980 | Nakaoka JiroPrime Minister's Cup Round 2 as Black | Loss | ↓19 |
| January 9, 1980 | Yasuda KiyoshiKisei 5 dan Section as White | Loss | ↓11 |
| May 10, 1979 | Sakai TakeshiPrime Minister's Cup Round 2 as Black | Loss | ↓4 |
| November 22, 1978 | Takamizawa TadaoPrime Minister's Cup Round 1 as Black | Win | ↑9 |
| December 7, 1977 | Kanashima TadashiPrime Minister's Cup Round 1 as Black | Loss | ↓13 |
| March 17, 1977 | Fujisawa HosaiHoninbo 2nd Preliminary as White | Loss | ↓4 |
| October 6, 1976 | Kawamoto NoboruPrime Minister's Cup as White | Loss | ↓14 |
| December 6, 1973 | Kaji KazutameNihon Ki-in Championship 2nd Preliminary as Black | Loss | ↓18 |
| January 28, 1970 | Cho ChikunJudan 1st Preliminary as White | Loss | ↓11 |
| March 30, 1967 | Naganuma MakotoHoninbo 2nd Preliminary as White | Loss | ↓16 |
| December 6, 1961 | Tanaka MinaichiFormer Meijin 2nd Preliminary as Black | Loss | ↓18 |
| September 8, 1960 | Kaji KazutameNihon Ki-in Championship 2nd Preliminary as White | Loss | ↓17 |
Head-to-head
| Opponent | Total | As Black | As White |
|---|---|---|---|
| Ohira Shuzo | 0-2.000 | 0-1 | 0-1 |
| Kaji Kazutame | 0-2.000 | 0-1 | 0-1 |
| Kanashima Tadashi | 0-1.000 | 0-1 | 0-0 |
| Sakata Eio | 0-1.000 | 0-1 | 0-0 |
| Nakaoka Jiro | 0-1.000 | 0-1 | 0-0 |
| Tanaka Minaichi | 0-1.000 | 0-1 | 0-0 |
| Kawamoto Noboru | 0-1.000 | 0-0 | 0-1 |
| Naganuma Makoto | 0-1.000 | 0-0 | 0-1 |
| Yasuda Kiyoshi | 0-1.000 | 0-0 | 0-1 |
| Fujisawa Hosai | 0-1.000 | 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 |
|---|---|---|
| 1988 | 0-1 | .000 |
| 1985 | 0-1 | .000 |
| 1981 | 0-1 | .000 |
| 1980 | 0-2 | .000 |
| 1979 | 0-1 | .000 |
| 1978 | 1-0 | 1.000 |
| 1977 | 0-2 | .000 |
| 1976 | 0-1 | .000 |
| 1973 | 0-1 | .000 |
| 1970 | 0-1 | .000 |
| 1967 | 0-1 | .000 |
| 1961 | 0-1 | .000 |
| 1960 | 0-1 | .000 |
| Total | 1-14 | .067 |
Calculated from games played between 1927 and 2026 (as of September 17, 2026).