47 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Markzon, Gregory | Ghaem Maghami, Ehsan | 0-1 | E26 | 54th World Open - 2026 | 2026-07-01 |
| Markzon, Gregory | Kevlishvili, Robby | 0-1 | A13 | Round 1: Markzon, Gregory - Kevlishvili, Robby | 2026-04-01 |
| Markzon, Gregory | Vasilyev, Mikhail | 1-0 | A04 | Round 10: Markzon, Gregory - Vasilyev, Mikhail | 2025-10-31 |
| Markzon, Gregory | Ventura, Sergio | 1-0 | A30 | Round 8: Markzon, Gregory - Ventura, Sergio | 2025-10-29 |
| Markzon, Gregory | Binham, Timothy F. | 1/2-1/2 | A05 | Round 6: Markzon, Gregory - Binham, Timothy F. | 2025-10-26 |
| Markzon, Gregory | Evertsson, Rune | 1-0 | A04 | Round 4: Markzon, Gregory - Evertsson, Rune | 2025-10-24 |
| Markzon, Gregory | Nasybullin, Vladislav | 1-0 | B15 | Round 2: Markzon, Gregory - Nasybullin, Vladislav | 2025-10-22 |
| Markzon, Gregory | Hugentobler, Patrick | 0-1 | E11 | World Senior Chess Championship 2024 | 2024-11-24 |
| Markzon, Gregory | Chapman, Terry P D | 1-0 | E26 | World Senior Chess Championship 2024 | 2024-11-21 |
| Markzon, Gregory | Rivera, Daniel | 1/2-1/2 | E95 | World Senior Chess Championship 2024 | 2024-11-19 |
| Markzon, Gregory | Vatter, Hans-Joachim | 1-0 | E21 | World Senior Chess Championship 2024 | 2024-11-18 |
| Andres Alvarez Vargas | Mendoza Gomez Juana Fernanda | 0-1 | E60 | Round 8: Andres Alvarez Vargas - Mendoza Gomez Juana Fernanda | 2024-06-02 |
| Andres Alvarez Vargas | Fernandez Suarez, Nelson Ivan | 1-0 | D30 | Round 2: Andres Alvarez Vargas - Fernandez Suarez, Nelson Ivan | 2024-06-01 |
| Andres Alvarez Vargas | Pardo Pebes, Sergio Branco | 0-1 | E60 | Round 4: Andres Alvarez Vargas - Pardo Pebes, Sergio Branco | 2024-06-01 |
| Andres Alvarez Vargas | Leal Escamilla, Daniel Zinedine | 0-1 | E60 | Round 6: Andres Alvarez Vargas - Leal Escamilla, Daniel Zinedine | 2024-06-01 |
| Markzon, Gregory | Johnson, Joshua | 1-0 | D12 | Round 10: Markzon, Gregory - Johnson, Joshua | 2024-05-31 |
| Markzon, Gregory | Bermudez, Edilson Enrique | 1-0 | A15 | Round 8: Markzon, Gregory - Bermudez, Edilson Enrique | 2024-05-29 |
| Markzon, Gregory | Munoz Triana, Joseph Steve | 1/2-1/2 | A15 | Round 2: Markzon, Gregory - Munoz Triana, Joseph Steve | 2024-05-27 |
| Markzon, Gregory | Mejia Ospina, Juan F | 1-0 | E62 | Round 4: Markzon, Gregory - Mejia Ospina, Juan F | 2024-05-27 |
| Markzon, Gregory | Murcia Molina, Manuel Hernando | 1-0 | A13 | Round 6: Markzon, Gregory - Murcia Molina, Manuel Hernando | 2024-05-27 |
| Gregory Markzon | Viktor Matviishen | 0-1 | B91 | Round 7: Gregory Markzon - Viktor Matviishen | 2023-08-04 |
| Markzon, Gregory | Wadsworth, Matthew J | 0-1 | D19 | Reykjavik Open 2023 | 2023-04-01 |