| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2020 | K League 1 | 5 | 223 | 1 | 0 | 0.4 | 6.89 |
| 2021 | K League 1 | 10 | 239 | 1 | 0 | 0.38 | 6.75 |
| 2022 | K League 2 | 8 | 279 | 1 | 0 | 0.32 | 7.05 |
| 2024 | K League 2 | 2 | 46 | 0 | 0 | — | 6.12 |
| 2025 | K3 League | 8 | 525 | 1 | 0 | 0.17 | 6.84 |
| 2026 | K3 League | 7 | 512 | 0 | 0 | 0 | 6.57 |
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 | ||
|---|---|---|---|---|---|---|---|---|
 Mokpo City | 3 | 2 | 1 | 0 | 0 | 0 | 1 | 0 |
 Daejeon Korail | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Busan Transportation | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Changwon City | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Ulsan Citize | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Seongnam | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 True Bangkok United | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Gwangju | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Shanghai Port | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 |
 Ansan Greeners | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 Daegu | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 |
 Jeonnam Dragons | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Jeju United | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Tampines Rovers | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Singha Chiangrai United | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 Seoul E. | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Gyeongju HNP | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Gangneung City | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Pocheon | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Yangpyeong | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Lee Sung-Yoon's 7 outings in the 2026 K3 League (512 minutes) produced no goals and no assists. Per-match rating over the season: 6.57.
His league record spans 6 seasons (2020–2026) across 5 clubs. At his best he averaged 7.05 in 2022, K League 2; at his worst, 6.57 in 2026. His last two rated seasons average 0.19 below his earlier career level.
