| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. L Harmon-Vellotti vs E Alsasua |
| 0-1 | 34 | 2008 | Far West Open | B07 Pirc |
| 2. A Balkum vs L Harmon-Vellotti |
| 0-1 | 40 | 2008 | Far West Open | E46 Nimzo-Indian |
| 3. S Merwin vs L Harmon-Vellotti |
| 1-0 | 42 | 2008 | Far West Open | C02 French, Advance |
| 4. L Harmon-Vellotti vs M Esserman |
| 0-1 | 37 | 2009 | Copper State Int | B80 Sicilian, Scheveningen |
| 5. D Rensch vs L Harmon-Vellotti |
| 1-0 | 55 | 2009 | 37th World Open | B90 Sicilian, Najdorf |
| 6. L Harmon-Vellotti vs M Arnold |
| 0-1 | 27 | 2010 | North American Open | B80 Sicilian, Scheveningen |
| 7. L Harmon-Vellotti vs R Sapozhnikov |
| 1-0 | 54 | 2011 | 39th World Open | B90 Sicilian, Najdorf |
| 8. A Sharevich vs L Harmon-Vellotti |
| 1-0 | 25 | 2011 | 39th World Open | E05 Catalan, Open, Classical line |
| 9. J Mu vs L Harmon-Vellotti |
| ½-½ | 40 | 2011 | 112th US Open | C02 French, Advance |
| 10. Naroditsky vs L Harmon-Vellotti |
| ½-½ | 32 | 2011 | 112th US Open | A15 English |
| 11. Van Wely vs L Harmon-Vellotti |
 | 1-0 | 48 | 2011 | 112th US Open | E17 Queen's Indian |
| 12. L Harmon-Vellotti vs J L Hammer |
| 0-1 | 59 | 2012 | Philadelphia Open | C77 Ruy Lopez |
| 13. R Prasca Sosa vs L Harmon-Vellotti |
| ½-½ | 31 | 2012 | Philadelphia Open | C04 French, Tarrasch, Guimard Main line |
| 14. I Krush vs L Harmon-Vellotti |
| 1-0 | 81 | 2012 | Philadelphia Open | A26 English |
| 15. L Harmon-Vellotti vs G Shahade |
| 0-1 | 44 | 2012 | Philadelphia Open | C77 Ruy Lopez |
| 16. L Harmon-Vellotti vs V Akobian |
| 0-1 | 86 | 2012 | National Open | E38 Nimzo-Indian, Classical, 4...c5 |
| 17. L Harmon-Vellotti vs A Ramirez Alvarez |
| 1-0 | 49 | 2012 | 40th World Open | A42 Modern Defense, Averbakh System |
| 18. L Harmon-Vellotti vs Shyaam Nikhil P |
| 1-0 | 43 | 2012 | 40th World Open | C11 French |
| 19. A Zapata vs L Harmon-Vellotti |
| ½-½ | 30 | 2012 | 40th World Open | C04 French, Tarrasch, Guimard Main line |
| 20. L Harmon-Vellotti vs Shabalov |
| 0-1 | 55 | 2012 | 40th World Open | E32 Nimzo-Indian, Classical |
| 21. Q Liu vs L Harmon-Vellotti |
| 0-1 | 100 | 2012 | 40th World Open | C00 French Defense |
| 22. R I C Shitsuka vs L Harmon-Vellotti |
| 0-1 | 34 | 2012 | 2nd Metropolitan International | E32 Nimzo-Indian, Classical |
| 23. E Moradiabadi vs L Harmon-Vellotti |
| 1-0 | 44 | 2012 | 2nd Metropolitan International | A26 English |
| 24. L Harmon-Vellotti vs D Ippolito |
| 1-0 | 55 | 2012 | 2nd Metropolitan International | E34 Nimzo-Indian, Classical, Noa Variation |
| 25. L Harmon-Vellotti vs A Matikozian |
| ½-½ | 80 | 2012 | 2nd Metropolitan International | E73 King's Indian |
Kibitzing
