SwissSys Standings. 2010 Ontario Chess Open: Open (Alphabetical)
| # | Name | Rtng | Rd 1 | Tot |
| 20 | Daniel Abrahams | 2060 | L5 | 0.0 |
| 10 | Yuri Aronov | 2266 | W25 | 1.0 |
| 17 | Felix Barrios | 2174 | L2 | 0.0 |
| 9 | Brett Campbell | 2270 | W24 | 1.0 |
| 4 | David Cummings | 2462 | D19 | 0.5 |
| 14 | Bill Doubleday | 2201 | W28 | 1.0 |
| 18 | Vladimir Drkulec | 2157 | L3 | 0.0 |
| 13 | David Filipovich | 2226 | H--- | 0.5 |
| 22 | Alexandru Florea | 2050 | L7 | 0.0 |
| 15 | Paul Gelis | 2198 | W30 | 1.0 |
| 26 | Laurentiu Grigorescu | 2004 | L11 | 0.0 |
| 8 | Nikita Gusev | 2274 | W23 | 1.0 |
| 7 | Liam Henry | 2295 | W22 | 1.0 |
| 28 | David Itkin | 1965 | L14 | 0.0 |
| 31 | Robert B. Johnston | unr. | H--- | 0.5 |
| 24 | Dalia Kagramanov | 2012 | L9 | 0.0 |
| 11 | Raymond Kaufman | 2234 | W26 | 1.0 |
| 12 | Michael Kleinman | 2232 | W27 | 1.0 |
| 16 | Yuriy Kryvoshlyk | 2174 | L1 | 0.0 |
| 29 | Ian Mahoney | 1678 | B--- | 1.0 |
| 3 | Nikolay Noritsyn | 2559 | W18 | 1.0 |
| 23 | Yelizaveta Orlova | 2028 | L8 | 0.0 |
| 6 | Victor Plotkin | 2422 | D21 | 0.5 |
| 1 | Bator Sambuev | 2612 | W16 | 1.0 |
| 5 | Roman Sapozhnikov | 2436 | W20 | 1.0 |
| 2 | Bryan Smith | 2572 | W17 | 1.0 |
| 19 | David Southam | 2119 | D4 | 0.5 |
| 30 | Leslie Tang | 1612 | L15 | 0.0 |
| 25 | Stephan Tonakanian | 2008 | L10 | 0.0 |
| 21 | Jesse Wang | 2052 | D6 | 0.5 |
| 27 | Keith Wight | 1975 | L12 | 0.0 |