Lee Seojin: results and match history
Record
| Year | Wins | Losses |
|---|---|---|
| 2026 | 3 | 7 |
| 2025 | 6 | 4 |
| Total | 9 | 11 |
Matches by tournament
WTT Feeder Bangkok 2026 September 14–18, 2026
| L | Women's singles Group 7 | Lee Seojin KOR vs Wei Jingming CHN 0-3 1-11, 4-11, 6-11 |
| W | Women's singles Group 7 | Lee Seojin KOR vs Lim Jisoo KOR 3-0 11-3, 12-10, 11-7 |
| W | Women's singles Group 7 | Lee Seojin KOR vs Nguyen Hanh Ngan VIE 3-0 14-12, 11-8, 11-9 |
WTT Feeder Puerto Princesa 2026 September 8–12, 2026
| L | Women's doubles Round of 16 | Lee Seojin / Kim Eunseo KOR vs Lee Zion / Heo Yerim KOR 0-3 2-11, 6-11, 7-11 |
| L | Women's singles Round of 32 | Im Li Ying MAS vs Lee Seojin KOR 3-1 11-7, 7-11, 11-8, 12-10 |
| L | Mixed doubles Qualifying round 1 | Chuang Chia-Chuan / Tsai Yun-En TPE vs Lee Yeonsu / Lee Seojin KOR 3-1 7-11, 11-7, 11-5, 11-4 |
WTT Feeder Vientiane 2026 August 4–8, 2026
| L | Women's doubles Quarterfinals | Lee Seojin / Kim Haneul KOR vs Lee Daeun / Kim Seongjin KOR 0-3 6-11, 7-11, 1-11 |
| W | Women's doubles Round of 16 | Lee Seojin / Kim Haneul KOR vs Wanwisa Aueawiriyayothin / Khemisarar Derujijaroen THA 3-1 11-1, 8-11, 11-6, 12-10 |
| L | Women's singles Round of 32 | Lee Seojin KOR vs Sasao Asuka JPN 1-3 6-11, 3-11, 12-10, 3-11 |
| L | Mixed doubles Qualifying round 1 | Yokotani Jo / Fujita Chiko JPN vs Lee Yeonsu / Lee Seojin KOR 3-0 11-7, 11-6, 11-4 |
WTT Feeder Parma 2025 November 29 – December 3, 2025
| L | Women's singles Round of 64 | Tin-Tin Ho ENG vs Lee Seojin KOR 3-0 11-7, 12-10, 12-10 |
| W | Women's singles Qualifying round 2 | Eugenia Sastre ESP vs Lee Seojin KOR 0-3 9-11, 8-11, 7-11 |
WTT Feeder Düsseldorf II 2025 November 24–27, 2025
| L | Women's singles Round of 32 | Lee Seojin KOR vs Linda Bergstrom SWE 0-3 6-11, 4-11, 4-11 |
| W | Women's singles Round of 64 | Enisa Sadikovic LUX vs Lee Seojin KOR 2-3 8-11, 11-8, 10-12, 13-11, 11-13 |
WTT Feeder Vientiane 2025 August 11–15, 2025
| L | Women's doubles Semifinals | Lee Daeun / Lee Seojin KOR vs Karen Lyne / Ai Xin Tee MAS 0-3 5-11, 2-11, 4-11 |
| L | Women's singles Round of 16 | Karen Lyne MAS vs Lee Seojin KOR 3-2 11-8, 8-11, 11-7, 12-14, 11-8 |
| W | Women's doubles Quarterfinals | Marina Donner / Malamatenia Papadimitriou FIN/GRE vs Lee Daeun / Lee Seojin KOR 2-3 7-11, 11-4, 11-9, 4-11, 6-11 |
| W | Women's singles Round of 32 | Lee Seojin KOR vs Wong Hoi Tung HKG 3-2 11-7, 7-11, 11-9, 2-11, 11-6 |
| W | Women's doubles Round of 16 | Lee Daeun / Lee Seojin KOR vs Loy Ming Ying / Ser Lin Qian SGP 3-1 11-8, 13-15, 13-11, 11-8 |
| W | Women's singles Round of 64 | Lee Seojin KOR vs Ruohan Liu LAO 3-1 11-4, 10-12, 11-7, 11-7 |
Source: WTT official results. Updated October 31, 2026. worldtabletennis.com