| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. M Arnold vs R Goletiani |
| 0-1 | 39 |
2004 |
32nd World Open | E00 Queen's Pawn Game |
| 2. M Arnold vs Le Quang Liem |
 | 0-1 | 38 |
2005 |
BELFORT YWCC BU14 | D10 Queen's Gambit Declined Slav |
| 3. B Abramovic vs M Arnold |
| 1-0 | 44 |
2007 |
World Open | E15 Queen's Indian |
| 4. P Vavrak vs M Arnold |
| 1-0 | 37 |
2007 |
Foxwoods Open | A15 English |
| 5. S Bercys vs M Arnold |
| 1-0 | 32 |
2007 |
Foxwoods Open | E15 Queen's Indian |
| 6. M Arnold vs B G Smith |
| 0-1 | 45 |
2007 |
World Open | D07 Queen's Gambit Declined, Chigorin Defense |
| 7. J Friedel vs M Arnold |
| 1-0 | 36 |
2007 |
World Open | B93 Sicilian, Najdorf, 6.f4 |
| 8. K Kuderinov vs M Arnold |
| 1-0 | 18 |
2008 |
World Open | B90 Sicilian, Najdorf |
| 9. M Arnold vs A Ramirez |
| 0-1 | 57 |
2008 |
World Open | D15 Queen's Gambit Declined Slav |
| 10. M Thaler vs M Arnold |
| 1-0 | 36 |
2008 |
World Open | B80 Sicilian, Scheveningen |
| 11. J Benjamin vs M Arnold |
| 1-0 | 23 |
2009 |
World Open | E12 Queen's Indian |
| 12. S Martinovic vs M Arnold |
| 1-0 | 82 |
2010 |
World Junior Championship | A58 Benko Gambit |
| 13. C Sandipan vs M Arnold |
| 1-0 | 37 |
2010 |
38th World Open | E20 Nimzo-Indian |
| 14. T Kantans vs M Arnold |
| 1-0 | 70 |
2010 |
World Junior Championship | A22 English |
| 15. J Gustafsson vs M Arnold |
| 1-0 | 66 |
2010 |
38th World Open | E11 Bogo-Indian Defense |
| 16. Smirin vs M Arnold |
| 1-0 | 28 |
2010 |
North American Open | B93 Sicilian, Najdorf, 6.f4 |
| 17. Ngoc Lan Tran vs M Arnold |
| 1-0 | 73 |
2010 |
World Junior Championship | A07 King's Indian Attack |
| 18. M Arnold vs Lenderman |
| 0-1 | 47 |
2010 |
38th World Open | B41 Sicilian, Kan |
| 19. M Arnold vs R Dimitrov |
| 0-1 | 68 |
2010 |
World Junior Championship | E14 Queen's Indian |
| 20. M Lewicki vs M Arnold |
| 1-0 | 36 |
2010 |
World Junior Championship | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 21. M Arnold vs M Molner |
| 0-1 | 53 |
2011 |
SPICE Cup (group B) | E10 Queen's Pawn Game |
| 22. Sasikiran vs M Arnold |
| 1-0 | 36 |
2011 |
Corsica Masters Knockout | A64 Benoni, Fianchetto, 11...Re8 |
| 23. M Arnold vs Sasikiran |
| 0-1 | 30 |
2011 |
Corsica Masters Knockout | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 24. M Arnold vs A Zatonskih |
| 0-1 | 26 |
2011 |
Kings vs Queens | A21 English |
| 25. Sasikiran vs M Arnold |
| 1-0 | 43 |
2011 |
Corsica Masters Knockout | E06 Catalan, Closed, 5.Nf3 |
