大垣 雄作 (b.1970) Nihon Ki-in pro, 9 dan in 2001. His profile at the Nihon Ki-in (Japanese).
Bob Myers: Ogaki (then 4-dan) was the teaching pro for our little company (Pacifitech) in Kamakura, Japan, in 1990 and 1991. Typically he played three boards. He dutifully lost one in ten games. A great teacher -- too bad he's so strong these days he no longer needs to play teaching games.
http://www.bob.myers.name/albums/friends/rtm_rsm_ogaki_tamengo.sized.jpg -dead link path looks wrong