| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2022/2023 | Regionalliga: Nordost | 12 | 848 | 4 | 0 | 0.42 | — |
| 2023/2024 | Regionalliga: Nordost | 28 | 679 | 3 | 0 | 0.4 | — |
| 2024/2025 | Regionalliga: Nordost | 13 | 283 | 0 | 0 | 0 | — |
| 2025/2026 | Regionalliga: Nordost | 15 | 90 | 0 | 0 | 0 | — |
Domestic league competitions only; G+A/90 computed from minutes actually played.
Cohort: 62 Regionalliga: Nordost forwards, 2023/2024, min. 450 minutes. Computed by ranking the full league corpus, not taken from any feed.
Figures computed from the GioScore season-stats database · as of 2026-07-07
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Viktoria Berlin | 4 | 1 | 0 | 3 | 0 | 0 | 0 | 0 |
 Lokomotive Leipzig | 4 | 2 | 0 | 2 | 0 | 0 | 0 | 0 |
 Hertha BSC II | 4 | 2 | 0 | 2 | 0 | 0 | 0 | 0 |
 Chemnitzer FC | 4 | 3 | 1 | 0 | 0 | 0 | 0 | 0 |
 Luckenwalde | 4 | 2 | 1 | 1 | 1 | 0 | 0 | 1 |
 BFC Dynamo | 3 | 2 | 1 | 0 | 2 | 0 | 1 | 0 |
 Rot-Weiß Erfurt | 3 | 1 | 1 | 1 | 2 | 0 | 0 | 0 |
 ZFC Meuselwitz | 3 | 1 | 0 | 2 | 1 | 0 | 0 | 0 |
 Babelsberg | 3 | 1 | 0 | 2 | 1 | 0 | 0 | 0 |
 Germania Halberstadt | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Zwickau | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Plauen | 2 | 2 | 0 | 0 | 1 | 0 | 0 | 0 |
 Altglienicke | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Chemie Leipzig | 2 | 0 | 2 | 0 | 2 | 0 | 0 | 0 |
 Eilenburg | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Greifswalder FC | 2 | 1 | 1 | 0 | 2 | 0 | 0 | 0 |
 Carl Zeiss Jena | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Bayer 04 Leverkusen | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Energie Cottbus | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Hallescher FC | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Kay Seidemann went through 15 Regionalliga: Nordost appearances in 2025/2026 (90 minutes) without a goal or an assist. Ranked across a 62-strong pool of Regionalliga: Nordost forwards (2023/2024, min. 450 minutes), he comes out in the 89th percentile by goal involvements per 90, and 11th of 62 for goals scored.
His league record spans 4 seasons (2022–2026) across 3 clubs, totalling 7 goals and 0 assists in 1,900 minutes — 0.33 G+A per 90 for his career.
| Club | Period | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| Rot-Weiß Erfurt | 2021/2022 - 2023/2024 | 40 | 7 | 0 | 1527 | — | — | — |
| Carl Zeiss Jena | 2024/2025 - 2025/2026 | 18 | 10 | 0 | 314 | — | — | 6.85 |
| Chemie Leipzig | 2025/2026 - now | 15 | 5 | 0 | 90 | — | — | — |
| Total | 73 | 22 | 0 | 1931 |
| Season | Club | Apps | Goals | Assists | Minutes | YC | RC | Rating |
|---|---|---|---|---|---|---|---|---|
| 25/26 | Chemie Leipzig | 15 | 5 | — | 90 | 0 | 0 | — |
| 24/25 | Carl Zeiss Jena | 18 | 10 | — | 314 | 1 | 0 | 6.85 |
| 23/24 | Rot-Weiß Erfurt | 28 | 3 | — | 679 | 2 | 0 | — |
| 22/23 | Rot-Weiß Erfurt | 12 | 4 | — | 848 | 0 | 0 | — |
