Westerners Beating 9d Professionals

A list of times that players born in Europe or the Americas beat a 9d professional in an even tournament game.

It's an incomplete collection, of course.

Note that the Ryusei is a quick play tournament. Note also that Michael Redmond is himself 9p. However, when he lost to James Kerwin in the 1990s he had not yet achieved the top rank.

The Westerners known to have beaten nine dan professionals are Michael Redmond (USA, Nihon Ki-in), Hans Pietsch (Germany, Nihon Ki-in), Fernando Aguilar (Argentina, amateur), Catalin Taranu (Romania, EGF) and Alexander Dinerchtein (Russia, KBA).

Date	Westerner	9p Opponent	Score	Event	Link
1988-02-25	Michael Redmond	Kiyonari Tetsuya	2.5	Judan, prelim.	game
1988-06-30	Michael Redmond	Hashimoto Shoji	0.5	Judan, losers' section	game
1988-12-26	Michael Redmond	Takemiya Masaki	1.5	Gosei, rd. 1	game
1993-11-18	Michael Redmond	Seo Bongsoo	8.5	Tongyang Cup, rd. 2	game
1997-06-27	Hans Pietsch	Yoda Norimoto	0.5	LG Cup, rd. 1	game
1999-07-22	Michael Redmond	Kobayashi Satoru	Res.	Judan, losers' section	game
2000-02-07	Michael Redmond	O Rissei	Res.	Fujitsu Cup, prelim.	game
2002-03-19	Fernando Aguilar	Hasegawa Sunao	3.5	Toyota Denso Cup, rd. 1	game
2002-04-28	Michael Redmond	Hasegawa Sunao	3.5	NHK Cup, rd. 1	game
2002-06-27	Catalin Taranu	Tsuchida Masamitsu	4.5	Gosei, prelim.	game
2002-09-02	Fernando Aguilar	Yo Kagen	2.5	Toyota Denso Cup, rd. 2	game
2002-12-12	Michael Redmond	Kataoka Satoshi	3.5	Gosei, rd. 1	game
2003-01-23	Michael Redmond	Ishii Kunio	Res.	Gosei, rd. 2	game
2003-04-10	Michael Redmond	Cho Chikun	3.5	Gosei, rd. 3	game
2003-06-17	Alexander Dinerchtein	O Rissei	1.5	LG Cup, rd. 2	game
2003-06-17	Michael Redmond	O Meien	Res.	LG Cup, rd. 1	game
2003-12-18	Michael Redmond	Takemiya Masaki	Res.	Tengen	game
2005-12-06	Michael Redmond	Mimura Tomoyasu	Res.	Ryusei, group stage	game
2005-12-22	Michael Redmond	Yuki Satoshi	Res.	Oza, prelim.	game
2006-01-17	Michael Redmond	Ito Yoji	0.5	Ryusei, group stage	game
2006-02-16	Michael Redmond	Yata Naoki	Res.	Oza, prelim.	game
2007-03-01	Michael Redmond	Ishii Kunio	Res.	Tengen, rd. 1	game
2010-04-01	Michael Redmond	Ishida Atsushi	Res.	Tengen, rd. 2	game
2010-06-17	Michael Redmond	Cho U	0.5	Agon Cup, rd. 1	game
2014-02-03	Michael Redmond	Imamura Toshiya	0.5	Ryusei, group stage	game
2014-02-27	Michael Redmond	Kobayashi Koichi	9.5	Ryusei, group stage	game
2016-07-07	Michael Redmond	Otake Hideo	1.5	Meijin, prelim.	game
2017-07-20	Michael Redmond	Kobayashi Koichi	Res.	Meijin, prelim.	game
2018-01-11	Michael Redmond	Rin Kaiho	Res.	Gosei, prelim.	game
2019-07-25	Michael Redmond	Ishida Yoshio	1.5	Meijin, prelim.	game
2019-08-11	Michael Redmond	Otake Hideo	Res.	Oza, prelim.	game
2019-08-08	Michael Redmond	Kobayashi Satoru	Res.	Gosei, prelim.	game