| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M Bodek vs J Colas |
| 0-1 | 38 | 2014 | USA-ch U20 | C53 Giuoco Piano |
| 27. A Chandra vs J Colas |
| 1-0 | 48 | 2015 | 9th Philadelphia Open | B42 Sicilian, Kan |
| 28. I Chirila vs J Colas |
| 1-0 | 35 | 2015 | 9th Philadelphia Open | E20 Nimzo-Indian |
| 29. S Zierk vs J Colas |
| 1-0 | 38 | 2015 | 9th Philadelphia Open | C45 Scotch Game |
| 30. M Rohde vs J Colas |
| 1-0 | 90 | 2015 | 9th Philadelphia Open | A35 English, Symmetrical |
| 31. J Colas vs A Stukopin |
| 0-1 | 46 | 2015 | 24th Chicago Open | E59 Nimzo-Indian, 4.e3, Main line |
| 32. Marek Przybek vs J Colas |
| 1-0 | 42 | 2015 | 24th Chicago Open | B40 Sicilian |
| 33. Niemann vs J Colas |
  | 1-0 | 61 | 2015 | 24th Chicago Open | A90 Dutch |
| 34. J Colas vs A Gorti |
| 0-1 | 77 | 2015 | 24th Chicago Open | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 35. A Polak vs J Colas |
| ½-½ | 64 | 2015 | 24th Chicago Open | A15 English |
| 36. J Colas vs A Sciupokas |
| 1-0 | 11 | 2015 | 24th Chicago Open | D35 Queen's Gambit Declined |
| 37. J Colas vs J Furfine |
| 0-1 | 59 | 2015 | 24th Chicago Open | E20 Nimzo-Indian |
| 38. A Virkud vs J Colas |
| 0-1 | 68 | 2015 | 24th Chicago Open | E32 Nimzo-Indian, Classical |
| 39. Jonathan Rasberry vs J Colas |
| 0-1 | 50 | 2015 | 116th US Open | A46 Queen's Pawn Game |
| 40. J Colas vs N Fields |
| 1-0 | 59 | 2015 | 116th US Open | D35 Queen's Gambit Declined |
| 41. S Vibbert vs J Colas |
| 1-0 | 45 | 2015 | 116th US Open | B23 Sicilian, Closed |
| 42. Taylor S Brunotts vs J Colas |
| 0-1 | 58 | 2015 | 116th US Open | B41 Sicilian, Kan |
| 43. J Colas vs Matthew E Fishbein |
| ½-½ | 68 | 2015 | 116th US Open | D80 Grunfeld |
| 44. M Brattain vs J Colas |
| ½-½ | 33 | 2015 | 116th US Open | A13 English |
| 45. J Madison vs J Colas |
| 0-1 | 34 | 2015 | 116th US Open | A07 King's Indian Attack |
| 46. J Colas vs Kendrick Nguyen |
| 1-0 | 50 | 2015 | 116th US Open | A90 Dutch |
| 47. J Colas vs I Chirila |
| 0-1 | 46 | 2015 | Millionaire Chess | D76 Neo-Grunfeld, 6.cd Nxd5, 7.O-O Nb6 |
| 48. J Colas vs A Chandra |
| 0-1 | 45 | 2015 | 99th Edward Lasker Mem | A05 Reti Opening |
| 49. O Barbosa vs J Colas |
| 0-1 | 38 | 2015 | 25th North American Open | E12 Queen's Indian |
| 50. J Colas vs Kamsky |
| 0-1 | 45 | 2015 | 25th North American Open | A88 Dutch, Leningrad, Main Variation with c6 |
Kibitzing
