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BokmålTomoaki KOYAMA
Japan| Competition | City | Date | Roles | |
|---|---|---|---|---|
| 1 | Japan Championships 2013 | Saitama | 2013-12-20 | Specialist (Senior men) |
| 2 | Japan Championships 2012 | Sapporo | 2012-12-20 | Assistant (Senior men) |
| 3 | Japan Championships 2011 | Kadoma | 2011-12-22 | Assistant (Senior men) |
| 4 | Japan Championships 2010 | Nagano | 2010-12-24 | Assistant (Senior men) |
| 5 | NHK Trophy 2010 | Nagoya | 2010-10-21 | Specialist (Senior men) Assistant (Senior ladies) |
| 6 | Japan Championships 2009 | Osaka | 2009-12-25 | Specialist (Senior men) |
| 7 | NHK Trophy 2009 | Nagano | 2009-11-05 | Assistant (Senior men) |
| 8 | Japan Open 2009 | Saitama | 2009-10-03 | Assistant (Senior men, Senior ladies) |
| 9 | Japan Championships 2008 | Nagano | 2008-12-25 | Specialist (Senior men) |
| 10 | Japan Junior Championships 2008 | Nagoya | 2008-11-23 | Specialist (Junior ladies) |
| 11 | Japan Championships 2007 | Kadoma | 2007-12-26 | Specialist (Senior ladies) |
| 12 | Kinoshita Group Cup Japan Open 2007 | Saitama | 2007-04-29 | Assistant (Senior ladies, Senior men) |