Hoshino Masaki
Hoshino Masaki (星野正樹) has a rating of 1626. Their highest rating so far is 1827 (June 15, 2017).
Retired. The rating shown is the rating at retirement.
- 2019 record
- 6-7
- Record since 1927
- 168-137(2 no result)
- Win rate
- .551
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
Rating history — professional
The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.
Recent games
| Date | Opponent and tournament | Result | Change |
|---|---|---|---|
| July 4, 2019 | Maeda RyojiTengen Colors unknown | Loss | ↓20 |
| June 10, 2019 | Ishigure IkuroRyusei Colors unknown | Loss | ↓23 |
| June 6, 2019 | Ogaki YusakuOza Colors unknown | Loss | ↓15 |
| May 16, 2019 | Chinen KaoriMeijin Colors unknown | Loss | ↓24 |
| May 9, 2019 | Mitani TetsuyaGosei Colors unknown | Loss | ↓11 |
| April 18, 2019 | Ryu ShikunHoninbo Preliminary A Final as Black | Loss | ↓12 |
| April 11, 2019 | Kato AtsushiOza Colors unknown | Win | ↑15 |
| April 4, 2019 | Arimura HiroshiGosei Colors unknown | Win | ↑9 |
| March 18, 2019 | Kobayashi KoichiAgon Kiriyama Cup Colors unknown | Loss | ↓18 |
| March 14, 2019 | Nagashima KozueGosei Colors unknown | Win | ↑4 |
| March 4, 2019 | Katsura AtsushiAgon Kiriyama Cup Colors unknown | Win | ↑5 |
| February 28, 2019 | Matsumoto TakehisaHoninbo Colors unknown | Win | ↑23 |
| January 31, 2019 | Oya KoichiGosei Colors unknown | Win | ↑12 |
| December 24, 2018 | Koyama TerumiWorld Go Championship Japan Preliminary Round 1 Colors unknown | Loss | — |
| December 20, 2018 | Yamada TakujiHoninbo Colors unknown | Win | ↑22 |
| December 13, 2018 | Rin ShienRyusei Round 7 as Black | Loss | ↓12 |
| November 22, 2018 | Kudo NorioHoninbo Preliminary C Final as White | Win | ↑9 |
| November 1, 2018 | Okada ShinichiroKisei First Tournament Preliminary Round 1 Colors unknown | Loss | ↓16 |
| October 25, 2018 | Yamada TakujiTengen Preliminary A as White | Loss | ↓11 |
| October 11, 2018 | Nishimura KeijiHoninbo Colors unknown | Win | ↑15 |
Head-to-head
| Opponent | Total | As Black | As White |
|---|---|---|---|
| Rin Kaiho | 2-3.400 | 1-1 | 1-0 |
| Yo Kagen | 3-2.600 | 2-0 | 1-0 |
| Suzuki Yoshimichi | 3-2.600 | 0-0 | 0-0 |
| Cho Chikun | 0-5.000 | 0-0 | 0-4 |
| Iwata Hajime | 3-1.750 | 0-0 | 0-0 |
| Tsuneishi Takashi | 3-1.750 | 0-0 | 0-0 |
| O Rissei | 0-4.000 | 0-1 | 0-2 |
| O Meien | 1-3.250 | 0-1 | 1-1 |
| Mizokami Tomochika | 1-3.250 | 1-1 | 0-0 |
| Mitani Tetsuya | 2-2.500 | 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 |
|---|---|---|
| 2019 | 6-7 | .462 |
| 2018 | 5-13 | .278 |
| 2017 | 24-12 | .667 |
| 2016 | 18-10 | .643 |
| 2015 | 8-9 | .471 |
| 2014 | 10-5 | .667 |
| 2013 | 7-5 | .583 |
| 2012 | 12-9 | .571 |
| 2011 | 5-5 | .500 |
| 2010 | 2-4 | .333 |
| 2009 | 2-3 | .400 |
| 2008 | 0-1 | .000 |
| 2007 | 0-1 | .000 |
| 2006 | 10-6 | .625 |
| 2005 | 16-9 | .640 |
| 2004 | 5-9 | .357 |
| 2003 | 17-9 | .654 |
| 2002 | 4-7 | .364 |
| 2001 | 0-1 | .000 |
| 1997 | 0-1 | .000 |
| 1996 | 1-1 | .500 |
| 1995 | 2-4 | .333 |
| 1994 | 1-2 | .333 |
| 1992 | 1-0(2 no result) | 1.000 |
| 1991 | 6-1 | .857 |
| 1990 | 2-1 | .667 |
| 1989 | 1-0 | 1.000 |
| 1987 | 0-1 | .000 |
| 1986 | 1-1 | .500 |
| 1985 | 1-0 | 1.000 |
| 1957 | 1-0 | 1.000 |
| Total | 168-137(2 no result) | .551 |
Calculated from games played between 1927 and 2026 (as of September 17, 2026).