| 16-Jul to 17-Jul-2016 | The 20th Kanto Open - Pro | Senior Grandmasters | B | $52 |
| 11-Jul to 12-Jul-2015 | The 19th Kanto Open | Senior Grandmasters | B | |
| 12-Oct to 13-Oct-2014 | 14th Tohoku Open | Grandmasters | B | $72 |
| 17-Aug to 18-Aug-2013 | 8th Michinoku Open | Senior Grandmasters | B | $36 |
| 10-Dec to 11-Dec-2011 | 7th Masters Championships | Grandmasters | B | $96 |
| 09-Oct to 10-Oct-2011 | 11th Tohoku Open | Grandmasters | B | $48 |
| 24-Sep to 25-Sep-2011 | 23rd National Championships | Grandmasters | B | $60 |
| 20-Aug to 21-Aug-2011 | 6th Michinoku Open - GDGT | Grandmasters | B | $108 |
| 02-Jul to 03-Jul-2011 | 15th Kanto Open | Grandmasters | B | $84 |
| 21-May to 22-May-2011 | 6th Kiyosatonomori Open | Grandmasters | B | $72 |
| 11-Dec to 12-Dec-2010 | 6th Masters Championships | Grandmasters | B | $96 |
| 18-Sep to 19-Sep-2010 | 12th Nippon Open | Masters | B | $45 |
| 21-Aug to 22-Aug-2010 | 14th Kanto Open | Grandmasters | B | $54 |
| 07-Aug to 08-Aug-2010 | 5th Michinoku Open | Grandmasters | B | $81 |
| 03-Jul to 04-Jul-2010 | 2nd Ishikawa Open | Grandmasters | B | $49 |
| 22-May to 23-May-2010 | 5th Kiyosatonomori Open | Grandmasters | B | $72 |
| 03-May to 05-May-2010 | 21st National Championships | Grandmasters | B | $90 |
| 11-Oct to 12-Oct-2009 | 4th Michinoku Open | Grandmasters | B | $63 |
| 22-Aug to 23-Aug-2009 | 13th Kanto Open | Grandmasters | B | $63 |
| 08-Aug to 09-Aug-2009 | 9th Tohoku Open | Grandmasters | B | $36 |
| 04-Jul to 05-Jul-2009 | 1st Ishikawa Open | Grandmasters | B | $36 |
| 16-May to 17-May-2009 | 11th Nihon Open | Grandmasters | B | $99 |
| 04-May to 05-May-2009 | 9th Minamisoma Open | Grandmasters | B | $45 |
| 10-Jan to 11-Jan-2009 | 7th Kanagawa Open | Masters | B | $66 |
| 22-Nov to 23-Nov-2008 | 20th National Championships | Masters | B | $108 |
| 12-Oct to 13-Oct-2008 | 3rd Michinoku Open | Masters | B | $81 |
| 23-Aug to 24-Aug-2008 | 12th Kanto Open | Masters | B | $72 |
| 09-Aug to 10-Aug-2008 | 8th Tohoku Open | Masters | B | $81 |
| 04-May to 05-May-2008 | 8th Minamisoma Open | Masters | B | $54 |
| 12-Jan to 13-Jan-2008 | 5th Kanagawa Open | Masters | B | $63 |
| 01-Dec to 02-Dec-2007 | 11th Kanto Open | Masters | B | $81 |
| 20-Oct to 21-Oct-2007 | 7th Tohoku Open | Masters | B | $45 |
| 29-Sep to 30-Sep-2007 | 2nd Michinoku Open | Masters | B | $63 |
| 16-Jun to 17-Jun-2007 | 19th National Championships | Masters | B | $135 |
| 09-Jun to 10-Jun-2007 | Akagi Open | Masters | B | $72 |
| 07-Oct to 08-Oct-2006 | 6th Tohoku Open | Mixed Pro Open | C | $34 |
| 06-May to 07-May-2006 | 6th Minamisoma Open | Mixed Pro Open | C | $77 |
