| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. D Lemos vs O Sagalchik |
| 0-1 | 37 |
2003 |
Torneo Continental Americano | D02 Queen's Pawn Game |
| 27. F Dos Santos vs O Sagalchik |
| 0-1 | 41 |
2003 |
Torneo Continental Americano | D02 Queen's Pawn Game |
| 28. O Sagalchik vs I Krush |
| 0-1 | 26 |
2003 |
US Championships 2003 | D00 Queen's Pawn Game |
| 29. O Sagalchik vs Tobares Leandro |
| 0-1 | 63 |
2003 |
Torneo Continental Americano | D88 Grunfeld, Spassky Variation, Main line, 10...cd, 11.cd |
| 30. G Shahade vs O Sagalchik |
| 1-0 | 59 |
2003 |
US Championships 2003 | B43 Sicilian, Kan, 5.Nc3 |
| 31. J Bibiloni vs O Sagalchik |
| 0-1 | 33 |
2003 |
Torneo Continental Americano | B53 Sicilian |
| 32. O Sagalchik vs E Epstein |
| ½-½ | 74 |
2004 |
Chessmaster US Championships 2005 | A40 Queen's Pawn Game |
| 33. R Burnett vs O Sagalchik |
| 1-0 | 54 |
2004 |
Chessmaster US Championships 2005 | A04 Reti Opening |
| 34. A Levina vs O Sagalchik |
| 1-0 | 23 |
2004 |
Chessmaster US Championships 2005 | B01 Scandinavian |
| 35. O Sagalchik vs C Lakdawala |
| 0-1 | 61 |
2004 |
Chessmaster US Championships 2005 | D19 Queen's Gambit Declined Slav, Dutch |
| 36. O Sagalchik vs C Airapetian |
| 0-1 | 67 |
2004 |
Chessmaster US Championships 2005 | E84 King's Indian, Samisch, Panno Main line |
| 37. A Hahn vs O Sagalchik |
| 1-0 | 27 |
2004 |
Chessmaster US Championships 2005 | D09 Queen's Gambit Declined, Albin Counter Gambit, 5.g3 |
| 38. T Vayserberg vs O Sagalchik |
 | 1-0 | 68 |
2004 |
Chessmaster US Championships 2005 | B23 Sicilian, Closed |
| 39. O Sagalchik vs I Zenyuk |
| 0-1 | 63 |
2004 |
Chessmaster US Championships 2005 | E76 King's Indian, Four Pawns Attack |
| 40. O Sagalchik vs S Muhammad |
| 0-1 | 49 |
2004 |
Chessmaster US Championships 2005 | A80 Dutch |