| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2015/2016 | Regionalliga: Nord | 21 | 1712 | 0 | 0 | 0 | — |
| 2016/2017 | Regionalliga: Nord | 12 | 1066 | 1 | 0 | 0.08 | — |
| 2017/2018 | Regionalliga: Nord | 15 | 815 | 1 | 0 | 0.11 | — |
| 2018/2019 | 2. Bundesliga | 7 | 630 | 0 | 0 | 0 | 6.72 |
| 2019/2020 | 2. Bundesliga | 9 | 518 | 0 | 1 | 0.17 | 6.8 |
| 2020 | K League 2 | 15 | 1284 | 0 | 0 | 0 | 6.79 |
| 2021 | K League 2 | 34 | 2989 | 1 | 4 | 0.15 | 7.16 |
| 2022 | K League 2 | 14 | 932 | 0 | 1 | 0.1 | 6.49 |
| 2023 | K League 1 | 23 | 1672 | 0 | 0 | 0 | 6.78 |
| 2026 | K League 1 | 2 | 134 | 0 | 0 | 0 | 6.43 |
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 2026-08-06
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Jeonnam Dragons | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 |
 Suwon | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Bucheon 1995 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Chungnam Asan | 2 | 0 | 1 | 1 | 0 | 0 | 1 | 0 |
 St. Pauli | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Darmstadt 98 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Seoul | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 VfL Bochum 1848 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 FC Union Berlin | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Suwon Bluewings | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Hamburger SV | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 |
 Wolfsburg II | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Heidenheim | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Cloppenburg | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Hertha BSC | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 VfB Stuttgart | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Jahn Regensburg | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Holstein Kiel | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Goslarer SC | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Verl | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Neither a goal nor an assist came from Young-Jae Seo's 23 K League 1 appearances in 2023 (1,672 minutes). His average match rating for that season computes to 6.78.
His recorded league career runs from 2015 to 2026: 10 seasons across 5 clubs. Season ratings peak at 7.16 in 2021, K League 2 and bottom out at 6.49 in 2022. The direction of late is downward — 0.23 under his prior average over the last two rated seasons.
