| Jun 27, 2026 | Schnaider | 1–0 | Llanos | Round 8: Schnaider, Ilan - Llanos, Guillermo | Alekhine Defense: Exchange Variation, Voronezh Variation | |
| Jun 27, 2026 | Lieby | 0–1 | Llanos | Round 7: Lieby, Camilo Julian - Llanos, Guillermo | Alekhine Defense: Scandinavian Variation | |
| Jun 26, 2026 | Llanos | ½–½ | Dolezal | Round 4: Llanos, Guillermo - Dolezal, Cristian | Hungarian Opening | |
| Jun 26, 2026 | Ambrogi | ½–½ | Llanos | Round 3: Ambrogi, Agustin - Llanos, Guillermo | Alekhine Defense: Scandinavian Variation | |
| Jun 26, 2026 | Llanos | 0–1 | Silva | Round 6: Llanos, Guillermo - Silva, Luca | King's Indian Attack, with e6 | |
| Jun 17, 2026 | Llanos | 0–1 | Ticona Rocabado | Round 5: Llanos, Guillermo - Ticona Rocabado, Licael Roderick | English Opening: Agincourt Defense, Neo-Catalan Declined | |
| May 30, 2026 | Dolezal | 1–0 | Llanos | Round 5: Dolezal, Cristian - Llanos, Guillermo | Rapport-Jobava System | |
| May 29, 2026 | Hungaski | 1–0 | Llanos | Round 3: Hungaski, Robert - Llanos, Guillermo | Sicilian Defense: Closed | |
| May 25, 2026 | Llanos | ½–½ | Ponti | Round 7: Llanos, Guillermo - Ponti, Enrique | King's Indian Defense: Normal Variation, Standard Development | |
| May 25, 2026 | Llanos | ½–½ | Pedro | Round 6: Llanos, Guillermo - Pedro, Fernando | Nimzo-Indian Defense: Normal Variation | |
| May 24, 2026 | Rubilar | 0–1 | Llanos | Round 5: Rubilar, Jose - Llanos, Guillermo | Old Indian Defense | |
| May 24, 2026 | Llanos | 1–0 | Gorisnic | Round 4: Llanos, Guillermo - Gorisnic, Eduardo | English Opening: Symmetrical Variation, Botvinnik System | |
| May 23, 2026 | Schwanek | 0–1 | Llanos | Round 3: Schwanek, Carlos - Llanos, Guillermo | Queen's Gambit Declined: Vienna Variation, Quiet Variation | |
| May 23, 2026 | Llanos | 1–0 | Ibar | Round 2: Llanos, Guillermo - Ibar, Marcelo | King's Indian Attack | |
| May 22, 2026 | Liso | 0–1 | Llanos | Round 1: Liso, Ricardo - Llanos, Guillermo | Van Geet Opening | |
| Mar 28, 2026 | Llanos | ½–½ | Barrionuevo | Round 8: Llanos, Guillermo - Barrionuevo, Pablo | King's Indian Attack | |
| Jan 31, 2026 | Gomez | 0–1 | Llanos | Round 9: Gomez, Carlos David - Llanos, Guillermo | Alekhine Defense: Modern Variation, Larsen Variation | |
| Dec 25, 2025 | Llanos | 0–1 | Ocampos | Round 5: Llanos, Guillermo - Ocampos, Ian | Dutch Defense: Leningrad Variation | |
| Dec 25, 2025 | Paveto | 1–0 | Llanos | Round 2: Paveto, Kevin - Llanos, Guillermo | Alekhine Defense: Two Pawns Attack, Tate Variation | |
| Nov 28, 2025 | Sturt | 1–0 | Llanos | Round 2: Sturt, Raven - Llanos, Guillermo | Bird Opening: Dutch Variation | |
| Nov 11, 2025 | Llanos | 1–0 | Ibar | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | English Opening | |
| Nov 10, 2025 | Toller | ½–½ | Llanos | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | French Defense: King's Indian Attack | |
| Nov 9, 2025 | Llanos | 1–0 | Paveto | Round 7: Llanos, Guillermo - Paveto, Kevin | Queen's Gambit Declined: Queen's Knight Variation | |
| Nov 9, 2025 | Llanos | 0–1 | Paveto | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | Queen's Gambit Declined: Queen's Knight Variation | |
| Nov 8, 2025 | Llanos | 1–0 | Ingas | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | Four Knights Game: Glek System | |
| Nov 7, 2025 | Toffoletto | ½–½ | Llanos | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | Zukertort Opening: Sicilian Invitation | |
| Nov 6, 2025 | Llanos | ½–½ | Orrego Palermo | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | Zukertort Opening | |
| Nov 5, 2025 | Llanos | 0–1 | Shirov | Round 2: Llanos, Guillermo - Shirov, Alexei | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Nov 5, 2025 | Yossen | 0–1 | Llanos | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | Indian Defense: Przepiorka Variation | |
| Nov 3, 2025 | Bayinay | 0–1 | Llanos | XXXII Abierto Internacional ProAm Main Events FIDE. $15.000.000 en premios | Dutch Defense: Classical Variation, Huisl Variation | |
| Nov 1, 2025 | Llanos | ½–½ | Carcamo | Round 8: Llanos, Guillermo - Carcamo, Matias | Caro-Kann Defense: Accelerated Panov Attack | |
| Nov 1, 2025 | Acosta | 1–0 | Llanos | Round 7: Acosta, Pablo Ismael - Llanos, Guillermo | Zukertort Opening: Dutch Variation | |
| Nov 1, 2025 | Llanos | 0–1 | Liascovich | Round 2: Llanos, Guillermo - Liascovich, Lucas | English Opening: King's English Variation | |
| Nov 1, 2025 | Cumpe | 1–0 | Llanos | Round 5: Cumpe, Lucas - Llanos, Guillermo | Alekhine Defense: Two Pawns Attack, Lasker Variation | |
| Jul 19, 2025 | Villarreal | 1–0 | Llanos | Round 9: Villarreal, Agustin - Llanos, Guillermo | Dutch Defense: Staunton Gambit, Tartakower Variation | |
| Jul 19, 2025 | Llanos | 0–1 | Gibson | Round 6: Llanos, Guillermo - Gibson, Tomas | Caro-Kann Defense: Accelerated Panov Attack, Modern Variation | |
| Jul 17, 2025 | Llanos | 0–1 | Flores | Round 2: Llanos, Guillermo - Flores, Diego | Zukertort Opening: Sicilian Invitation | |
| Jun 28, 2025 | Llanos | 0–1 | Liascovich | Round 8: Llanos, Guillermo - Liascovich, Lucas | French Defense: Steiner Variation | |
| Jun 28, 2025 | Llanos | 0–1 | Dolezal | Round 7: Llanos, Guillermo - Dolezal, Cristian | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Jun 28, 2025 | Villegas | 0–1 | Llanos | Round 5: Villegas, Franco - Llanos, Guillermo | Alekhine Defense: Four Pawns Attack | |
| Jun 27, 2025 | Llanos | 1–0 | Gaitan | Round 4: Llanos, Guillermo - Gaitan, Juan Manuel | English Opening: Symmetrical Variation, Fianchetto Variation | |
| Jun 27, 2025 | Zarnicki | 0–1 | Llanos | Round 3: Zarnicki, Pablo - Llanos, Guillermo | Alekhine Defense: Scandinavian Variation | |
| Jun 27, 2025 | Paveto | 1–0 | Llanos | Round 6: Paveto, Kevin - Llanos, Guillermo | Alekhine Defense: Modern Variation, Alburt Variation | |
| Jun 6, 2024 | Cuberli | 1–0 | Llanos | Round 6: Cuberli, Emiliano - Llanos, Guillermo | Ruy Lopez: Morphy Defense, Modern Steinitz Defense | |
| Jun 4, 2024 | De Dovitiis | 1–0 | Llanos | Round 4: De Dovitiis, Alejo - Llanos, Guillermo | Ruy Lopez: Morphy Defense, Cozio Defense | |
| Jun 3, 2024 | Llanos | ½–½ | Habiaga | Round 3: Llanos, Guillermo - Habiaga, Raul Adrian | English Opening: Neo-Catalan | |
| Feb 25, 2024 | Flores | ½–½ | Llanos | Round 7: Flores, Diego - Llanos, Guillermo | English Opening: King's English Variation, Four Knights Variation, Quiet Line | |
| Feb 25, 2024 | Llanos | 1–0 | Ibarra | Round 6: Llanos, Guillermo - Ibarra, Juan Martin | Semi-Slav Defense | |
| Feb 24, 2024 | Llanos | ½–½ | Felgaer | Round 5: Llanos, Guillermo - Felgaer, Ruben | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Jun 20, 2023 | Llanos | 1–0 | Cidre | MASTER CIUDAD DE BUENOS AIRES - Club Arg | English Opening: Symmetrical Variation, Botvinnik System | |
| Jun 19, 2023 | Llanos | 0–1 | Unhold | MASTER CIUDAD DE BUENOS AIRES - Club Arg | English Opening: Symmetrical Variation, Anti-Benoni Variation, Spielmann Defense | |
| Jun 19, 2023 | Moldovan | 1–0 | Llanos | MASTER CIUDAD DE BUENOS AIRES - Club Arg | Zukertort Opening: Dutch Variation | |
| Jun 18, 2023 | Llanos | 1–0 | Dubrovich | MASTER CIUDAD DE BUENOS AIRES - Club Arg | English Opening: Symmetrical Variation, Botvinnik System | |
| Jun 18, 2023 | Fiori | 0–1 | Llanos | MASTER CIUDAD DE BUENOS AIRES - Club Arg | French Defense: Rubinstein Variation, Fort Knox Variation | |
| Jun 17, 2023 | Llanos | ½–½ | Acosta | MASTER CIUDAD DE BUENOS AIRES - Club Arg | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Jun 16, 2023 | Chiappero | 0–1 | Llanos | MASTER CIUDAD DE BUENOS AIRES - Club Arg | Benoni Defense: Old Benoni | |
| Jun 15, 2023 | Llanos | ½–½ | Echeguren | MASTER CIUDAD DE BUENOS AIRES - Club Arg | Four Knights Game: Glek System | |
| Jun 14, 2023 | Suasnabar | 0–1 | Llanos | MASTER CIUDAD DE BUENOS AIRES - Club Arg | English Opening: Symmetrical Variation, Anti-Benoni Variation | |