| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. E L de Assis Pereira vs M de Haro |
| ½-½ | 45 | 1984 | Brazilian Championship | B20 Sicilian |
| 27. R Disconzi da Silva vs M de Haro |
| 1-0 | 35 | 1984 | Brazilian Interclub Championship | D32 Queen's Gambit Declined, Tarrasch |
| 28. P C de Souza Haro vs M de Haro |
| ½-½ | 42 | 1984 | Brazilian Interclub Championship | D40 Queen's Gambit Declined, Semi-Tarrasch |
| 29. M de Haro vs R Fontoura |
| 1-0 | 38 | 1984 | Brazilian Interclub Championship | C55 Two Knights Defense |
| 30. C Braga vs M de Haro |
| 1-0 | 22 | 1984 | Brazilian Interclub Championship | C56 Two Knights |
| 31. M de Haro vs H Kalinowski |
| 1-0 | 37 | 1984 | Brazilian Interclub Championship | D21 Queen's Gambit Accepted |
| 32. A A Correa vs M de Haro |
| 1-0 | 27 | 1991 | Mar del Plata Open | D37 Queen's Gambit Declined |
| 33. M de Haro vs G Kanefsck |
| 0-1 | 34 | 1991 | Buenos Aires Konex Canon Open | B18 Caro-Kann, Classical |
| 34. M de Haro vs A M Martins |
| 1-0 | 33 | 1991 | Sao Paulo Latin American Cup Open | C68 Ruy Lopez, Exchange |
| 35. F Sanz Alonso vs M de Haro |
| 1-0 | 35 | 1991 | Sao Paulo Latin American Cup Open | C42 Petrov Defense |
| 36. W de Andrade vs M de Haro |
| ½-½ | 44 | 1991 | Sao Paulo Latin American Cup Open | C42 Petrov Defense |
| 37. M de Haro vs A S Segal |
| ½-½ | 11 | 1991 | Sao Paulo Latin American Cup Open | C42 Petrov Defense |
| 38. M de Haro vs J Cueto |
| ½-½ | 35 | 1991 | Sao Paulo Latin American Cup Open | B21 Sicilian, 2.f4 and 2.d4 |
| 39. O J Vaz vs M de Haro |
| ½-½ | 32 | 1991 | Sao Paulo Latin American Cup Open | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 40. M de Haro vs E Figari |
| 1-0 | 65 | 1991 | Sao Paulo Latin American Cup Open | B21 Sicilian, 2.f4 and 2.d4 |
| 41. M de Haro vs R Barbosa e Silva |
| 1-0 | 12 | 1992 | Guarapuava Latin American Cup Open | D06 Queen's Gambit Declined |
| 42. G Russo vs M de Haro |
| 1-0 | 71 | 1992 | Guarapuava Latin American Cup Open | E04 Catalan, Open, 5.Nf3 |
| 43. J Pelikian vs M de Haro |
| 1-0 | 62 | 1992 | Guarapuava Latin American Cup Open | B02 Alekhine's Defense |
| 44. M de Haro vs M Cukier |
| 1-0 | 42 | 1992 | Guarapuava Latin American Cup Open | E97 King's Indian |
| 45. M de Haro vs A Nascimento |
| 0-1 | 23 | 1992 | Guarapuava Latin American Cup Open | A83 Dutch, Staunton Gambit |
| 46. F Fiorito vs M de Haro |
| 1-0 | 21 | 1992 | Guarapuava Latin American Cup Open | E10 Queen's Pawn Game |
| 47. M de Haro vs M Guimaraes de Souza |
| 1-0 | 45 | 1992 | Guarapuava Latin American Cup Open | E61 King's Indian |
| 48. R Lehtivaara vs M de Haro |
| 1-0 | 34 | 1992 | Guarapuava Latin American Cup Open | C28 Vienna Game |
| 49. M de Haro vs E Matsuura |
| 1-0 | 46 | 1992 | Guarapuava Latin American Cup Open | D85 Grunfeld |
| 50. R Leitao vs M de Haro |
| ½-½ | 51 | 1992 | Guarapuava Latin American Cup Open | D35 Queen's Gambit Declined |
Kibitzing
