| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. M Grigoryan vs D E Onley |
| 0-1 | 9 | 2017 | BCF-chT3Sa 1617 (4NCL) | A48 King's Indian |
| 52. D E Onley vs S Swanson |
| 1-0 | 44 | 2017 | BCF-chT3Sa 1617 (4NCL) | B06 Robatsch |
| 53. A J Peters vs D E Onley |
| 0-1 | 44 | 2017 | BCF-chT3S 1617 (4NCL) Demotion pool | E73 King's Indian |
| 54. M Giedraitis vs D E Onley |
| ½-½ | 34 | 2017 | NATO-ch 28th | E67 King's Indian, Fianchetto |
| 55. P Maes vs D E Onley |
| ½-½ | 60 | 2017 | NATO-ch 28th | A07 King's Indian Attack |
| 56. D E Onley vs F Stuhr |
| ½-½ | 12 | 2017 | NATO-ch 28th | C45 Scotch Game |
| 57. D E Onley vs A R Hernandez |
| 1-0 | 36 | 2017 | NATO-ch 28th | C05 French, Tarrasch |
| 58. D E Onley vs A Duren |
| ½-½ | 53 | 2017 | NATO-ch 28th | B27 Sicilian |
| 59. M Pirs vs D E Onley |
| ½-½ | 25 | 2017 | NATO-ch 28th | B22 Sicilian, Alapin |
| 60. M Noviks vs D E Onley |
| ½-½ | 17 | 2017 | NATO-ch 28th | E92 King's Indian |
| 61. D E Onley vs M Lyell |
| 0-1 | 56 | 2017 | BCF-chT3S 1617 (4NCL) Demotion pool | C03 French, Tarrasch |
| 62. M Rogacewicz vs D E Onley |
| 1-0 | 62 | 2017 | BCF-chT3S 1617 (4NCL) Demotion pool | E87 King's Indian, Samisch, Orthodox |
| 63. J Stuart Robertson vs D E Onley |
| ½-½ | 29 | 2017 | BCF-chT3S 1617 (4NCL) Demotion pool | E73 King's Indian |
| 64. A Compton vs D E Onley |
| 0-1 | 34 | 2018 | BCF-chT3Sb 1718 (4NCL) | B22 Sicilian, Alapin |
| 65. D E Onley vs W Hewitt |
| ½-½ | 39 | 2018 | BCF-chT3S 1718 (4NCL) Promotion pool | B17 Caro-Kann, Steinitz Variation |
| 66. I Gooding vs D E Onley |
| 0-1 | 61 | 2018 | BCF-chT3S 1718 (4NCL) Promotion pool | B46 Sicilian, Taimanov Variation |
| 67. D E Onley vs T Villiers |
| ½-½ | 50 | 2018 | BCF-chT3S 1718 (4NCL) Promotion pool | B01 Scandinavian |
| 68. D E Onley vs H Langer |
| 1-0 | 31 | 2018 | NATO-ch 29th | B06 Robatsch |
| 69. M Helbig vs D E Onley |
| 1-0 | 52 | 2018 | NATO-ch 29th | E67 King's Indian, Fianchetto |
| 70. D E Onley vs J S Middaugh |
| 1-0 | 47 | 2018 | NATO-ch 29th | C10 French |
| 71. A Stankowski vs D E Onley |
| 1-0 | 30 | 2018 | NATO-ch 29th | A07 King's Indian Attack |
| 72. A Dekker vs D E Onley |
| 0-1 | 26 | 2018 | NATO-ch 29th | E67 King's Indian, Fianchetto |
| 73. D E Onley vs J F Farrell |
| ½-½ | 24 | 2018 | NATO-ch 29th | C22 Center Game |
| 74. D E Onley vs M Sypien |
| 0-1 | 32 | 2018 | NATO-ch 29th | B74 Sicilian, Dragon, Classical |
| 75. D E Onley vs C Pickard |
| 0-1 | 56 | 2019 | BCF-chT3Sa 1819 (4NCL) | B43 Sicilian, Kan, 5.Nc3 |
Kibitzing
