| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. E Song vs R Preotu |
| ½-½ | 40 | 2013 | Chicago Open | B90 Sicilian, Najdorf |
| 27. M Esserman vs R Preotu |
| 0-1 | 46 | 2013 | 23rd North American Open | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 28. R Preotu vs T Gareyev |
| 1-0 | 57 | 2014 | 42nd World Open | C45 Scotch Game |
| 29. R Preotu vs Naroditsky |
| 1-0 | 57 | 2014 | SPICE Cup Open | C45 Scotch Game |
| 30. Le Quang Liem vs R Preotu |
 | ½-½ | 95 | 2014 | SPICE Cup Open | A81 Dutch |
| 31. R Preotu vs K Troff |
| 0-1 | 56 | 2014 | SPICE Cup Open | B90 Sicilian, Najdorf |
| 32. R Preotu vs V Durarbayli |
| 1-0 | 31 | 2014 | SPICE Cup Open | B67 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7 |
| 33. F Corrales Jimenez vs R Preotu |
| ½-½ | 55 | 2014 | SPICE Cup Open | C67 Ruy Lopez |
| 34. I Nyzhnyk vs R Preotu |
| 1-0 | 57 | 2014 | SPICE Cup Open | E60 King's Indian Defense |
| 35. R Preotu vs Sevian |
| ½-½ | 37 | 2014 | SPICE Cup Open | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 36. M Sandberg vs R Preotu |
| 0-1 | 23 | 2015 | Reykjavik Open | B94 Sicilian, Najdorf |
| 37. R Preotu vs J K Thorgeirsson |
| 0-1 | 36 | 2015 | Reykjavik Open | C65 Ruy Lopez, Berlin Defense |
| 38. S Thorhallsson vs R Preotu |
| 0-1 | 26 | 2015 | Reykjavik Open | A88 Dutch, Leningrad, Main Variation with c6 |
| 39. R Preotu vs H Loftsson |
| 1-0 | 38 | 2015 | Reykjavik Open | B30 Sicilian |
| 40. S Tjomsland vs R Preotu |
| 0-1 | 63 | 2015 | Reykjavik Open | A88 Dutch, Leningrad, Main Variation with c6 |
| 41. R Preotu vs H Stefansson |
| 0-1 | 50 | 2015 | Reykjavik Open | C92 Ruy Lopez, Closed |
| 42. G Gislason vs R Preotu |
| 0-1 | 45 | 2015 | Reykjavik Open | A45 Queen's Pawn Game |
| 43. R Preotu vs M Cornette |
| ½-½ | 54 | 2015 | Reykjavik Open | C41 Philidor Defense |
| 44. S Khademalsharieh vs R Preotu |
| 1-0 | 47 | 2015 | Reykjavik Open | A85 Dutch, with c4 & Nc3 |
| 45. R Preotu vs J Wege |
| 1-0 | 30 | 2015 | Reykjavik Open | C05 French, Tarrasch |
| 46. R Preotu vs J G Ludwig |
| 1-0 | 29 | 2016 | 44th Annual World Open | B76 Sicilian, Dragon, Yugoslav Attack |
| 47. R Preotu vs D S Smith |
| 1-0 | 31 | 2017 | PRO Chess League (Atlantic) | B12 Caro-Kann Defense |
| 48. P Charbonneau vs R Preotu |
| 0-1 | 31 | 2017 | PRO Chess League (Atlantic) | E46 Nimzo-Indian |
| 49. R Preotu vs M Arnold |
| 1-0 | 32 | 2017 | PRO Chess League (Atlantic) | B80 Sicilian, Scheveningen |
| 50. Lenderman vs R Preotu |
| 1-0 | 59 | 2017 | PRO Chess League (Atlantic) | E32 Nimzo-Indian, Classical |
Kibitzing
