[15] San Martin de San Juan 0-0 Guillermo Brown [18] 2021-07-31 19:00
Stadium: Estadio Ingeniero Hilario Sánchez Round: 19
Head to Head
| Argentina Nacional B | 2021/03/21 19:00 | Guillermo Brown v San Martin de San Juan | D | 0-0 |
| Argentina Nacional B | 2021/01/10 20:10 | Guillermo Brown v San Martin de San Juan | W | 0-1 |
| Argentina Nacional B | 2019/11/24 20:00 | Guillermo Brown v San Martin de San Juan | D | 0-0 |
Home History
| Argentina Nacional B | 2021/07/24 18:30 | Atletico Rafaela v San Martin de San Juan | W | 0-2 |
| Argentina Nacional B | 2021/07/17 18:30 | Independiente Rivadavia v San Martin de San Juan | D | 1-1 |
| Argentina Nacional B | 2021/07/12 18:30 | San Martin de San Juan v Barracas Central | L | 2-3 |
| Argentina Nacional B | 2021/07/04 18:30 | Instituto AC Cordoba v San Martin de San Juan | D | 1-1 |
| Argentina Nacional B | 2021/06/29 19:00 | San Martin de San Juan v Gimnasia Jujuy | D | 2-2 |
| Argentina Nacional B | 2021/06/22 18:00 | Tristan Suarez v San Martin de San Juan | L | 4-1 |
| Argentina Nacional B | 2021/06/17 18:30 | San Martin de San Juan v Ferro Carril Oeste | D | 1-1 |
| Argentina Nacional B | 2021/06/10 18:00 | Deportivo Moron v San Martin de San Juan | L | 1-0 |
Away History
| Argentina Nacional B | 2021/07/24 18:00 | Guillermo Brown v CA Brown de Adrogue | L | 0-3 |
| Argentina Nacional B | 2021/07/17 18:30 | All Boys v Guillermo Brown | L | 3-0 |
| Argentina Nacional B | 2021/07/11 18:00 | Guillermo Brown v Atletico Rafaela | D | 1-1 |
| Argentina Nacional B | 2021/07/04 18:30 | Independiente Rivadavia v Guillermo Brown | W | 0-2 |
| Argentina Nacional B | 2021/06/27 14:00 | Guillermo Brown v Barracas Central | L | 0-1 |
| Argentina Nacional B | 2021/06/23 18:00 | Instituto AC Cordoba v Guillermo Brown | D | 1-1 |
| Argentina Nacional B | 2021/06/17 18:00 | Guillermo Brown v Gimnasia Jujuy | D | 0-0 |
| Argentina Nacional B | 2021/06/09 18:00 | Tristan Suarez v Guillermo Brown | L | 1-0 |