| Steve Hickman defeated Robert Ohashi |
2012 Derby City Classic One Pocket |
| Robert Ohashi defeated Dennis Cox |
2013 Derby City Classic Bank Pool |
| Shawn Putnam defeated Robert Ohashi |
2013 Derby City Classic Bank Pool |
| Brian Hebbeler defeated Robert Ohashi |
2013 Derby City Classic Bank Pool |
| Justin Hall defeated Robert Ohashi |
2013 Derby City Classic One Pocket |
| Chris Gentile defeated Robert Ohashi |
2013 Derby City Classic One Pocket |
| Patrick Griess defeated Robert Ohashi |
2013 Derby City Classic 9-Ball |
| Robert Ohashi defeated Stan Bennett |
2014 Derby City Classic Bank Pool |
| Robert Ohashi defeated Bille Miller |
2014 Derby City Classic Bank Pool |
| Robert Ohashi defeated Todd Coon |
2014 Derby City Classic Bank Pool |
| Niels Feijen defeated Robert Ohashi |
2014 Derby City Classic Bank Pool |
| Darren Appleton defeated Robert Ohashi |
2014 Derby City Classic Bank Pool |
| Karen Corr defeated Robert Ohashi |
2014 Derby City Classic One Pocket |
| Ellis Kane defeated Robert Ohashi |
2014 Derby City Classic One Pocket |
| Robert Ohashi defeated Patrick Brown |
2015 Derby City Classic One Pocket |
| Jeff Abernathy defeated Robert Ohashi |
2015 Derby City Classic Bank Pool |
| Marc Bijsterbosch defeated Robert Ohashi |
2015 Derby City Classic Bank Pool |
| Edward Tipton defeated Robert Ohashi |
2015 Derby City Classic One Pocket |
| Mark Coats defeated Robert Ohashi |
2015 Derby City Classic One Pocket |
| Yaroslav Vinokur defeated Robert Ohashi |
2015 Derby City Classic 9-Ball |
| Mark Nanashee defeated Robert Ohashi |
2016 Derby City Classic Bank Pool |
| Derek Pogirski defeated Robert Ohashi |
2016 Derby City Classic One Pocket |
| Robert Ohashi defeated Terrence Lanier |
2016 Derby City Classic One Pocket |
| Charles Mora defeated Robert Ohashi |
2016 Derby City Classic One Pocket |
| John Rawski defeated Robert Ohashi |
2018 Derby City Classic Bank Pool |
| Troy Jones defeated Robert Ohashi |
2018 Derby City Classic Bank Pool |
| Yerry Calderon defeated Robert Ohashi |
2018 Derby City Classic One Pocket |
| Robert Ohashi defeated Mark Horn sr |
2018 Derby City Classic One Pocket |
| Robert Ohashi defeated Chris Heinrich |
2018 Derby City Classic One Pocket |
| Shannon Daulton defeated Robert Ohashi |
2018 Derby City Classic One Pocket |
| Julio Burgos defeated Robert Ohashi |
2018 Derby City Classic 9-Ball |
| Randy Camantigue defeated Robert Ohashi |
2019 Derby City Classic Bank Pool |
| Robert Ohashi defeated Teddy Tucker |
2019 Derby City Classic Bank Pool |
| John Gabriel defeated Robert Ohashi |
2019 Derby City Classic Bank Pool |
| Russell Parsons defeated Robert Ohashi |
2019 Derby City Classic One Pocket |
| Redgie Cutler defeated Robert Ohashi |
2019 Derby City Classic One Pocket |
| Robert Ohashi defeated Earl Age III |
2024 Derby City Classic One Pocket |
| John Turpin defeated Robert Ohashi |
2024 Derby City Classic One Pocket |
| Nathan Childress defeated Robert Ohashi |
2024 Derby City Classic One Pocket |