Valentin Borisov has faced 10 opponents throughout his career
| Player | Team(s) | Games |
|---|---|---|
| Hristo Anguelov |
NSA Sofia
(BUL-2)
|
1 |
| Damyan Dikov |
NSA Sofia
(BUL-2)
|
1 |
| Vasil Hristov |
NSA Sofia
(BUL-2)
|
1 |
| Kalin Hristov |
NSA Sofia
(BUL-2)
|
1 |
| Danail Hristov |
NSA Sofia
(BUL-2)
|
1 |
| Antonio Iliev |
NSA Sofia
(BUL-2)
|
1 |
| Ventsislav Manuilov |
NSA Sofia
(BUL-2)
|
1 |
| Tsvetelin Mladenov |
NSA Sofia
(BUL-2)
|
1 |
| Dimitar Tarpanov |
NSA Sofia
(BUL-2)
|
1 |
| Galimir Tomov |
NSA Sofia
(BUL-2)
|
1 |