| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Fedorowicz vs W Harper |
| 1-0 | 26 |
2007 |
World Open | E11 Bogo-Indian Defense |
| 2. W Harper vs B Reichstein |
| 1-0 | 32 |
2007 |
Foxwoods Open | E17 Queen's Indian |
| 3. J Becerra-Rivero vs W Harper |
| 1-0 | 65 |
2007 |
World Open | C15 French, Winawer |
| 4. D Rensch vs W Harper |
| 1-0 | 61 |
2007 |
Foxwoods Open | C41 Philidor Defense |
| 5. M Panchanathan vs W Harper |
| 1-0 | 41 |
2007 |
World Open | C03 French, Tarrasch |
| 6. W Harper vs K Waidyaratne |
| 1-0 | 51 |
2007 |
Foxwoods Open | E99 King's Indian, Orthodox, Taimanov |
| 7. M Khachiyan vs W Harper |
| 1-0 | 28 |
2007 |
World Open | C41 Philidor Defense |
| 8. P Vavrak vs W Harper |
| 1-0 | 33 |
2007 |
Foxwoods Open | E11 Bogo-Indian Defense |
| 9. W Harper vs M Lee |
 | 1-0 | 32 |
2008 |
United States Chess League | B25 Sicilian, Closed |
| 10. J Friedel vs W Harper |
| 1-0 | 30 |
2008 |
Foxwoods Open | B76 Sicilian, Dragon, Yugoslav Attack |
| 11. I Meerovich vs W Harper |
| 1-0 | 25 |
2008 |
United States Chess League | E25 Nimzo-Indian, Samisch |
| 12. D Ippolito vs W Harper |
| 1-0 | 29 |
2008 |
World Open | E33 Nimzo-Indian, Classical |
| 13. A Almeida vs W Harper |
| 1-0 | 47 |
2008 |
World Open | E11 Bogo-Indian Defense |
| 14. A Ivanov vs W Harper |
| 1-0 | 41 |
2008 |
World Open | B48 Sicilian, Taimanov Variation |
| 15. P Zhao vs W Harper |
| 1-0 | 66 |
2010 |
USA Junior Championship | A07 King's Indian Attack |
| 16. S Zierk vs W Harper |
| 1-0 | 48 |
2010 |
USA Junior Championship | B30 Sicilian |
| 17. D Yang vs W Harper |
| 1-0 | 60 |
2010 |
USA Junior Championship | E29 Nimzo-Indian, Samisch |
| 18. W Harper vs T Hughes |
| 1-0 | 33 |
2010 |
USA Junior Championship | A10 English |
| 19. W Harper vs Robson |
| 1-0 | 40 |
2010 |
USA Junior Championship | E67 King's Indian, Fianchetto |
| 20. W Harper vs J Bryant |
| 1-0 | 42 |
2010 |
USA Junior Championship | E94 King's Indian, Orthodox |
| 21. W Harper vs K W Troff |
| 1-0 | 36 |
2011 |
U.S. Junior Championship | A15 English |
| 22. A Getz vs W Harper |
| 1-0 | 56 |
2011 |
U.S. Junior Championship | C60 Ruy Lopez |
| 23. W Harper vs J Bryant |
| 1-0 | 58 |
2011 |
U.S. Junior Championship | E68 King's Indian, Fianchetto, Classical Variation, 8.e4 |
| 24. W Harper vs C Holt |
| 1-0 | 96 |
2011 |
U.S. Junior Championship | D11 Queen's Gambit Declined Slav |
| 25. G Young vs W Harper |
| 1-0 | 36 |
2011 |
U.S. Junior Championship | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
