| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. Y Gruenfeld vs M Machin Rivera |
| ½-½ | 36 | 2014 | Tromso Olympiad | B06 Robatsch |
| 27. M Wiedenkeller vs M Machin Rivera |
| 1-0 | 44 | 2014 | Tromso Olympiad | E77 King's Indian |
| 28. M Machin Rivera vs E Emojong |
| 1-0 | 29 | 2014 | Tromso Olympiad | A36 English |
| 29. D Cilia Vincenti vs M Machin Rivera |
| 0-1 | 28 | 2014 | Tromso Olympiad | E71 King's Indian, Makagonov System (5.h3) |
| 30. M Machin Rivera vs O de la Riva Aguado |
| ½-½ | 41 | 2014 | Tromso Olympiad | A10 English |
| 31. M Machin Rivera vs S Zhigalko |
| 0-1 | 39 | 2016 | Baku Olympiad | A20 English |
| 32. M Machin Rivera vs Z Zhang |
| 0-1 | 33 | 2016 | Baku Olympiad | A13 English |
| 33. P Wojciechowski vs M Machin Rivera |
| 0-1 | 41 | 2016 | Baku Olympiad | B06 Robatsch |
| 34. M Machin Rivera vs A H Abdulgalil Saleh |
| 1-0 | 51 | 2016 | Baku Olympiad | A36 English |
| 35. Vachier-Lagrave vs M Machin Rivera |
 | 1-0 | 44 | 2016 | Baku Olympiad | B06 Robatsch |
| 36. Rozentalis vs M Machin Rivera |
| 1-0 | 47 | 2016 | Baku Olympiad | B06 Robatsch |
| 37. M Machin Rivera vs B Amin |
| 0-1 | 74 | 2016 | Baku Olympiad | A10 English |
| 38. J L Munoz vs M Machin Rivera |
| ½-½ | 41 | 2016 | Baku Olympiad | E63 King's Indian, Fianchetto, Panno Variation |
| 39. M Machin Rivera vs F Rakotomaharo |
| ½-½ | 67 | 2016 | Baku Olympiad | A11 English, Caro-Kann Defensive System |
| 40. M Machin Rivera vs C Prasad |
| 1-0 | 59 | 2016 | Baku Olympiad | A34 English, Symmetrical |
| 41. B Anhwere vs M Machin Rivera |
| ½-½ | 45 | 2020 | FIDE Online Olympiad | E63 King's Indian, Fianchetto, Panno Variation |
| 42. M Machin Rivera vs J L Marckens |
| 1-0 | 57 | 2020 | FIDE Online Olympiad | A15 English |
| 43. M Machin Rivera vs S Miguel |
| 0-1 | 43 | 2020 | FIDE Online Olympiad | A15 English |
| 44. Mikhail Strovsky vs M Machin Rivera |
| 0-1 | 30 | 2020 | FIDE Online Olympiad | B06 Robatsch |
| 45. M Machin Rivera vs Baha Miswadah |
| 1-0 | 40 | 2020 | FIDE Online Olympiad | E18 Queen's Indian, Old Main line, 7.Nc3 |
| 46. B Lesbros vs M Machin Rivera |
| 0-1 | 44 | 2020 | FIDE Online Olympiad | E63 King's Indian, Fianchetto, Panno Variation |
| 47. O Douissa vs M Machin Rivera |
| ½-½ | 87 | 2020 | FIDE Online Olympiad | B06 Robatsch |
| 48. M Machin Rivera vs S Boidiya |
| 0-1 | 75 | 2020 | FIDE Online Olympiad | A11 English, Caro-Kann Defensive System |
| 49. R White vs M Machin Rivera |
| ½-½ | 53 | 2020 | FIDE Online Olympiad | B06 Robatsch |
| 50. M Machin Rivera vs M Andersen |
| 0-1 | 50 | 2020 | FIDE Online Olympiad | A11 English, Caro-Kann Defensive System |
Kibitzing
