| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J C Diaz Rosas vs T Razanadrakotoarisoa |
| 0-1 | 42 | 2022 | Chennai Olympiad | A66 Benoni |
| 27. H Ahn vs J C Diaz Rosas |
| ½-½ | 56 | 2022 | Chennai Olympiad | D39 Queen's Gambit Declined, Ragozin, Vienna Variation |
| 28. S Masango vs J C Diaz Rosas |
| 0-1 | 40 | 2022 | Chennai Olympiad | A06 Reti Opening |
| 29. F Khairallah vs J C Diaz Rosas |
| 1-0 | 47 | 2022 | Chennai Olympiad | D35 Queen's Gambit Declined |
| 30. S Loay vs J C Diaz Rosas |
| 0-1 | 45 | 2024 | Rilton Cup 2024/25 | B10 Caro-Kann |
| 31. J C Diaz Rosas vs R Pujari |
| 1-0 | 38 | 2024 | Rilton Cup 2024/25 | C95 Ruy Lopez, Closed, Breyer |
| 32. J Seemann vs J C Diaz Rosas |
| 1-0 | 50 | 2024 | Rilton Cup 2024/25 | C50 Giuoco Piano |
| 33. J C Diaz Rosas vs R Rakshitta |
| 0-1 | 30 | 2024 | Rilton Cup 2024/25 | C11 French |
| 34. V Seiger vs J C Diaz Rosas |
| ½-½ | 68 | 2024 | Rilton Cup 2024/25 | A49 King's Indian, Fianchetto without c4 |
| 35. J C Diaz Rosas vs N Vedant |
| 0-1 | 32 | 2025 | Rilton Cup 2024/25 | C95 Ruy Lopez, Closed, Breyer |
| 36. O Nilsson vs J C Diaz Rosas |
| 0-1 | 41 | 2025 | Rilton Cup 2024/25 | B12 Caro-Kann Defense |
| 37. J C Diaz Rosas vs S Swaminathan |
| ½-½ | 45 | 2025 | Rilton Cup 2024/25 | B57 Sicilian |
| 38. T Kenneskog vs J C Diaz Rosas |
| 0-1 | 40 | 2025 | Rilton Cup 2024/25 | C45 Scotch Game |
| 39. J C Diaz Rosas vs F Stevanin Pavoni |
| 1-0 | 54 | 2025 | American Continental | E73 King's Indian |
| 40. M Carcamo vs J C Diaz Rosas |
| 0-1 | 33 | 2025 | American Continental | A07 King's Indian Attack |
| 41. J C Diaz Rosas vs A Fier |
| 0-1 | 42 | 2025 | American Continental | B33 Sicilian |
| 42. J C Diaz Rosas vs B Hardaway |
| 0-1 | 55 | 2025 | American Continental | C79 Ruy Lopez, Steinitz Defense Deferred |
Kibitzing
