| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M S Miller vs V Mezentsev |
| 0-1 | 26 | 2003 | 104th US Open | A57 Benko Gambit |
| 27. V Mezentsev vs N Yap |
| 1-0 | 26 | 2003 | 104th US Open | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 28. A Stripunsky vs V Mezentsev |
| 1-0 | 42 | 2003 | 104th US Open | B25 Sicilian, Closed |
| 29. A E Moussa vs V Mezentsev |
| 0-1 | 41 | 2003 | 104th US Open | E70 King's Indian |
| 30. L Christiansen vs V Mezentsev |
| ½-½ | 68 | 2003 | 104th US Open | A30 English, Symmetrical |
| 31. V Mezentsev vs R Del Pilar |
| 0-1 | 52 | 2003 | 104th US Open | B57 Sicilian |
| 32. L Au vs V Mezentsev |
| 0-1 | 48 | 2003 | 104th US Open | B31 Sicilian, Rossolimo Variation |
| 33. V Mezentsev vs R Hermansen |
| 0-1 | 50 | 2003 | 104th US Open | A07 King's Indian Attack |
| 34. V Mezentsev vs A La Combe |
| 1-0 | 30 | 2003 | 104th US Open | C49 Four Knights |
| 35. A Bisguier vs V Mezentsev |
| 0-1 | 56 | 2003 | 104th US Open | E70 King's Indian |
| 36. V Mezentsev vs G Small |
| 0-1 | 36 | 2003 | 21st Western States Open, Reno, NV | A07 King's Indian Attack |
| 37. Serper vs V Mezentsev |
| 0-1 | 30 | 2005 | Far West Open | D50 Queen's Gambit Declined |
| 38. T Kurosaki vs V Mezentsev |
| 0-1 | 42 | 2005 | Memorial Day Classic | A30 English, Symmetrical |
| 39. V Mezentsev vs Yermolinsky |
| 0-1 | 47 | 2005 | East Bay Chess Club FIDE Swiss | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 40. V Mezentsev vs P Chaplin |
| 1-0 | 33 | 2007 | National Open | B06 Robatsch |
| 41. Nakamura vs V Mezentsev |
| 1-0 | 35 | 2007 | National Open | D37 Queen's Gambit Declined |
| 42. V Mezentsev vs L Cohen |
| 1-0 | 35 | 2007 | National Open | C03 French, Tarrasch |
| 43. M Erickson vs V Mezentsev |
| 0-1 | 38 | 2007 | National Open | A40 Queen's Pawn Game |
| 44. V Mezentsev vs B Finegold |
| 1-0 | 34 | 2007 | National Open | B30 Sicilian |
| 45. V Mezentsev vs J Friedel |
| 0-1 | 37 | 2007 | National Open | C55 Two Knights Defense |
| 46. V Mezentsev vs E Atalik |
| 1-0 | 42 | 2007 | Imre Konig mem 2nd | C53 Giuoco Piano |
| 47. E Atalik vs V Mezentsev |
| 1-0 | 46 | 2007 | Imre Konig mem 2nd | D02 Queen's Pawn Game |
| 48. R Dominguez vs V Mezentsev |
| 0-1 | 29 | 2008 | Far West Open | B32 Sicilian |
| 49. V Mezentsev vs C Collyer |
| ½-½ | 62 | 2008 | Far West Open | C05 French, Tarrasch |
| 50. V Mezentsev vs Naroditsky |
| 0-1 | 40 | 2008 | Far West Open | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
Kibitzing
