| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M Kersic vs D E Onley |
| 1-0 | 39 | 2014 | NATO-ch 25th | B46 Sicilian, Taimanov Variation |
| 27. D E Onley vs K Rosseel |
| 1-0 | 34 | 2015 | NATO-ch 26th | C05 French, Tarrasch |
| 28. D E Onley vs F Wantiez |
| ½-½ | 52 | 2015 | NATO-ch 26th | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 29. A Demjen vs D E Onley |
| 0-1 | 34 | 2015 | NATO-ch 26th | B22 Sicilian, Alapin |
| 30. D E Onley vs H Andersen |
| 1-0 | 33 | 2015 | NATO-ch 26th | B18 Caro-Kann, Classical |
| 31. A Volodin vs D E Onley |
| 1-0 | 33 | 2015 | NATO-ch 26th | A45 Queen's Pawn Game |
| 32. A Rosenkilde vs D E Onley |
| 0-1 | 40 | 2015 | NATO-ch 26th | E95 King's Indian, Orthodox, 7...Nbd7, 8.Re1 |
| 33. D E Onley vs D Graczyk |
| 0-1 | 43 | 2015 | NATO-ch 26th | B31 Sicilian, Rossolimo Variation |
| 34. D E Onley vs R Lawrence |
| 1-0 | 32 | 2015 | BCF-ch Week1 AM op | B06 Robatsch |
| 35. R Bansal vs D E Onley |
 | 0-1 | 30 | 2015 | BCF-ch Week1 AM op | E61 King's Indian |
| 36. D E Onley vs P Crocker |
| ½-½ | 32 | 2015 | BCF-ch Week1 AM op | B02 Alekhine's Defense |
| 37. J Tambini vs D E Onley |
| ½-½ | 78 | 2015 | BCF-ch Week1 AM op | B23 Sicilian, Closed |
| 38. D E Onley vs T Ivekovic |
| ½-½ | 64 | 2015 | BCF-ch Week1 AM op | A07 King's Indian Attack |
| 39. D E Onley vs A Hynes |
| 1-0 | 28 | 2016 | BCF-chT2a 1516 (4NCL) | C45 Scotch Game |
| 40. M Davey vs D E Onley |
| ½-½ | 41 | 2016 | BCF-chT2a 1516 (4NCL) | A07 King's Indian Attack |
| 41. F C W Chin vs D E Onley |
| 1-0 | 59 | 2016 | BCF-chT2d 1516 (4NCL) Demotion pool | E67 King's Indian, Fianchetto |
| 42. D E Onley vs D P Wheeler |
| 0-1 | 39 | 2016 | BCF-chT2d 1516 (4NCL) Demotion pool | C05 French, Tarrasch |
| 43. M Noviks vs D E Onley |
| 0-1 | 22 | 2016 | NATO-ch 27th | B21 Sicilian, 2.f4 and 2.d4 |
| 44. D E Onley vs D Hater |
| 1-0 | 42 | 2016 | NATO-ch 27th | C45 Scotch Game |
| 45. D Bacus vs D E Onley |
| ½-½ | 55 | 2016 | NATO-ch 27th | B46 Sicilian, Taimanov Variation |
| 46. D E Onley vs F Wantiez |
| 0-1 | 37 | 2016 | NATO-ch 27th | C45 Scotch Game |
| 47. J Prevot vs D E Onley |
| ½-½ | 40 | 2016 | NATO-ch 27th | A05 Reti Opening |
| 48. D E Onley vs K Cichy |
| ½-½ | 25 | 2016 | NATO-ch 27th | B60 Sicilian, Richter-Rauzer |
| 49. A Demjen vs D E Onley |
| ½-½ | 43 | 2016 | NATO-ch 27th | B50 Sicilian |
| 50. D E Onley vs W Hewitt |
| ½-½ | 50 | 2017 | BCF-chT3Sa 1617 (4NCL) | B17 Caro-Kann, Steinitz Variation |
Kibitzing
