| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2023/2024 | First League | 1 | 4 | 0 | 0 | — | 7 |
| 2024/2025 | First League | 17 | 226 | 0 | 0 | 0 | 6.5 |
| 2025/2026 | First League | 7 | 295 | 0 | 0 | 0 | 6.25 |
Domestic league competitions only (SportMonks sub_type='domestic'); national-team, continental and cup competitions are excluded. Classification resolved by league id against the canonical leagues index. G+A/90 computed from minutes actually played.
Figures computed from the GioScore season-stats database · as of 2026-07-14
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Botev Vratsa | 4 | 2 | 1 | 1 | 0 | 0 | 0 | 0 |
 Slavia Sofia | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 0 |
 Ludogorets | 2 | 1 | 0 | 1 | 0 | 0 | 2 | 0 |
 Lokomotiv Sofia 1929 | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
 Hebar 1918 | 2 | 1 | 1 | 0 | 0 | 1 | 0 | 1 |
 Levski Krumovgrad | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 CSKA Sofia | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Spartak Varna | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Marek | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Septemvri Sofia | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Dobrudzha 1919 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 CSKA 1948 Sofia | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Israel U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Norway U17 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 |
 Austria U17 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Malta U17 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Kaloyan Kostov went through 7 First League appearances in 2025/2026 (295 minutes) without a goal or an assist. GioScore's computed rating for the season averages 6.25.
The database holds 3 league seasons for him, from 2023 to 2025, all with a single club. His best-rated season remains 2024/2025 (6.5, First League); his lowest was 2025/2026 (6.25).
