| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 101. M Villanueva vs A Ramirez Alvarez |
| ½-½ | 54 | 2018 | Pro Chess League | A31 English, Symmetrical, Benoni Formation |
| 102. A Veliz vs M Villanueva |
| 0-1 | 28 | 2018 | Norberto La Porta Cup Open | D31 Queen's Gambit Declined |
| 103. M Villanueva vs C Jorge |
| 1-0 | 50 | 2018 | Norberto La Porta Cup Open | B03 Alekhine's Defense |
| 104. A Giampa vs M Villanueva |
| 0-1 | 35 | 2018 | Norberto La Porta Cup Open | A01 Nimzovich-Larsen Attack |
| 105. M Villanueva vs J Benedetti |
| 1-0 | 40 | 2018 | Norberto La Porta Cup Open | B28 Sicilian, O'Kelly Variation |
| 106. P I Acosta vs M Villanueva |
| ½-½ | 55 | 2018 | Norberto La Porta Cup Open | A06 Reti Opening |
| 107. M Villanueva vs M Perez |
| 0-1 | 32 | 2018 | Norberto La Porta Cup Open | B38 Sicilian, Accelerated Fianchetto, Maroczy Bind, 6.Be3 |
| 108. D Contin vs M Villanueva |
| 0-1 | 29 | 2018 | Norberto La Porta Cup Open | A13 English |
| 109. M Villanueva vs G Spata |
| 1-0 | 52 | 2018 | Norberto La Porta Cup Open | C67 Ruy Lopez |
| 110. M Villanueva vs Pichot |
| 1-0 | 50 | 2018 | Argentine Championship | C89 Ruy Lopez, Marshall |
| 111. S Slipak vs M Villanueva |
| ½-½ | 13 | 2018 | Argentine Championship | E06 Catalan, Closed, 5.Nf3 |
| 112. M Villanueva vs M Lorenzini |
| ½-½ | 22 | 2018 | Argentine Championship | C67 Ruy Lopez |
| 113. E Real de Azua vs M Villanueva |
| ½-½ | 9 | 2018 | Argentine Championship | D30 Queen's Gambit Declined |
| 114. M Villanueva vs C Lujan |
| 1-0 | 50 | 2018 | Argentine Championship | B33 Sicilian |
| 115. T Sosa vs M Villanueva |
| ½-½ | 31 | 2018 | Argentine Championship | C09 French, Tarrasch, Open Variation, Main line |
| 116. M Villanueva vs J Benedetti |
| 1-0 | 34 | 2018 | Argentine Championship | B76 Sicilian, Dragon, Yugoslav Attack |
| 117. C D Gomez vs M Villanueva |
| ½-½ | 27 | 2018 | Argentine Championship | C00 French Defense |
| 118. M Villanueva vs J F Pierrot |
| ½-½ | 34 | 2018 | Argentine Championship | C42 Petrov Defense |
| 119. F Peralta vs M Villanueva |
| 1-0 | 35 | 2018 | Argentine Championship | D31 Queen's Gambit Declined |
| 120. M Villanueva vs K Paveto |
| 0-1 | 30 | 2018 | Argentine Championship | C78 Ruy Lopez |
| 121. M Villanueva vs P I Acosta |
| ½-½ | 15 | 2018 | Argentine Championship | B28 Sicilian, O'Kelly Variation |
| 122. F Perez Ponsa vs M Villanueva |
| ½-½ | 19 | 2018 | Argentine Championship | C42 Petrov Defense |
| 123. A Rodriguez Vila vs M Villanueva |
| 0-1 | 49 | 2018 | 22nd Copa Mercosur | A13 English |
| 124. M Villanueva vs P I Acosta |
| ½-½ | 38 | 2018 | 22nd Copa Mercosur | B90 Sicilian, Najdorf |
| 125. L Tristan vs M Villanueva |
| 1-0 | 49 | 2018 | 22nd Copa Mercosur | D00 Queen's Pawn Game |
Kibitzing
