63 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Juan Mas, Santiago | Gonzalez Lema, Carlos | 0-1 | A01 | Round 1: Juan Mas, Santiago - Gonzalez Lema, Carlos | 2026-09-25 |
| Juan Mas, Santiago | De Lomas Busquets, Alba | 1/2-1/2 | B22 | ABSOLUTO | 2026-08-20 |
| Juan Mas, Santiago | Lopez Quevedo, Eduardo | 0-1 | B23 | Round 6: Juan Mas, Santiago - Lopez Quevedo, Eduardo | 2026-08-02 |
| Juan Mas, Santiago | Kowalski Rubiales, Leo | 1-0 | A05 | La Zubia 2025 | 2025-12-08 |
| Juan Mas, Santiago | Perea Sardon, Francisco Javier | 1-0 | B10 | La Zubia 2025 | 2025-12-07 |
| Juan Mas, Santiago | Lopez Nieto, Jose Manuel | 1/2-1/2 | B10 | La Zubia 2025 | 2025-12-06 |
| Juan Mas, Santiago | Alonso Cuenca, Agustin | 1-0 | B27 | La Zubia 2025 | 2025-12-05 |
| Juan Mas, Santiago | Praczukowski, Stanislaw | 1/2-1/2 | A34 | Round 9: Juan Mas, Santiago - Praczukowski, Stanislaw | 2025-05-15 |
| Juan Mas, Santiago | Gormally, Daniel W | 0-1 | A20 | Round 1: Juan Mas, Santiago - Gormally, Daniel W | 2025-05-10 |
| Juan Mas, Santiago | Garcia Sahuquillo, Marcos Antonio | 1-0 | A01 | Round 7: Juan Mas, Santiago - Garcia Sahuquillo, Marcos Antonio | 2024-07-28 |
| Juan Mas, Santiago | Torres Sanchez, Jose | 0-1 | A01 | Round 9: Juan Mas, Santiago - Torres Sanchez, Jose | 2024-07-28 |
| Juan Mas, Santiago | Sanz Wawer, Daniel | 0-1 | Round 5: Juan Mas, Santiago - Sanz Wawer, Daniel | 2024-07-27 | |
| Juan Mas, Santiago | Domingo Escudero, Miguel | 1-0 | A01 | Round 8: Juan Mas, Santiago - Domingo Escudero, Miguel | 2024-07-27 |
| Juan Mas, Santiago | Buenafe Moya, Javier | 0-1 | A01 | Round 6: Juan Mas, Santiago - Buenafe Moya, Javier | 2024-07-25 |
| Juan Mas, Santiago | Ventura Monfort, Javier | 1-0 | A01 | Round 4: Juan Mas, Santiago - Ventura Monfort, Javier | 2024-07-24 |
| Juan Mas, Santiago | Arce Cano, Nicolas | 1-0 | A01 | Round 2: Juan Mas, Santiago - Arce Cano, Nicolas | 2024-07-23 |
| Juan Mas, Santiago | Caballero Ortin, Jorge | 1/2-1/2 | A01 | Round 9: Juan Mas, Santiago - Caballero Ortin, Jorge | 2024-07-20 |
| Juan Mas, Santiago | Saravanan Durga | 1/2-1/2 | A01 | Round 7: Juan Mas, Santiago - Saravanan Durga | 2024-07-18 |
| Juan Mas, Santiago | Contreras Moliner, Angel | 1-0 | A01 | Round 4: Juan Mas, Santiago - Contreras Moliner, Angel | 2024-07-16 |
| Juan Mas, Santiago | Sos Andreu, Eric | 0-1 | A01 | Round 2: Juan Mas, Santiago - Sos Andreu, Eric | 2024-06-14 |
| Juan Mas, Santiago | Jimenez Martinez, Jose Vicente | 0-1 | A01 | Round 9: Juan Mas, Santiago - Jimenez Martinez, Jose Vicente | 2024-03-31 |
| Juan Mas, Santiago | Perez Aleman, Pedro Tomas | 0-1 | B18 | CE VETERANOS. supra 50.2023 | 2023-10-06 |
| Juan Mas, Santiago | Castillo Garcia, Pau | 1/2-1/2 | B03 | Spanish Senior Championships 2023 - Over 50 | 2023-10-02 |
| Juan Mas, Santiago | Martinez Fresneda, David | 1/2-1/2 | A05 | Almansa Open | 2022-08-13 |
| Juan Mas, Santiago | Guillo Longares, Cecilia | 1/2-1/2 | D00 | Almansa Open | 2022-08-12 |
| Juan Mas, Santiago | Munoz, Miguel | 0-1 | B01 | II Llinars International Chess Open 2022 | 2022-06-29 |
| Juan Mas, Santiago | Millan Parraga, Alejandro | 1-0 | A15 | Casabermeja Open | 2021-09-12 |
| Juan Mas, Santiago | Maldonado Mena, German | 0-1 | A06 | Casabermeja Open | 2021-09-12 |
| Juan Mas, Santiago | Jurado Vazquez, Javier | 1-0 | A15 | Casabermeja Open | 2021-09-11 |
| Juan Mas, Santiago | Pogorelov, Ruslan | 0-1 | B23 | Sevilla Open | 2021-07-01 |
| Juan Mas, Santiago | Giaccio, Alfredo | 0-1 | C03 | Round 6: Juan Mas, Santiago - Giaccio, Alfredo |