| Hideyuki Sakai | |
|---|---|
| Full name | Hideyuki Sakai |
| Kanji | 坂井秀至 |
| Born | April 23, 1973 Sanda, Hyōgo, Japan |
| Turned pro | 2000 |
| Rank | 7 dan |
| Affiliation | Kansai Ki-in |
Hideyuki Sakai (坂井秀至 Sakai Hideyuki, born April 23, 1973) is a professional Go player.
Before becoming a professional, Sakai was majoring in medical science at Kyoto University. For a long time, Sakai was the strongest amateur player in Japan, and when he won the World Amateur Go Championship in 2000, the Kansai Ki-in awarded him professional 5 dan (after defeating two 5 dan and two 7 dan). He was also the first player in Japan to be awarded a special 8 dan (amateur) diploma. In 2003, he won the biggest Kansai Ki-in tournament, the Kansai Ki-in Championship. In 2004, he was runner-up for the Shinjin-O title, losing to Mizokami Tomochika two games to one (losing both by half point). He is currently active in various tournament leagues for both the Nihon Ki-in (participation in Meijin league 2005-present) and Kansai Ki-in.
In 2010, Sakai won the Gosei title, defeating title-holder Cho U 3-2.
| Domestic | ||
|---|---|---|
| Title | Wins | Runners-up |
| Gosei | 1 (2010) | |
| Shinjin-O | 1 (2004) | |
| Kansai Ki-in Championship | 1 (2003) | 2 (2004, 2007) |
| Total | 2 | 3 |