| seong_yejun vs Paul | 6–8 | 42.86% |
| seong_yejun vs Reina | 8–3 | 72.73% |
| seong_yejun vs Jin | 4–6 | 40.00% |
| seong_yejun vs Dragunov | 7–3 | 70.00% |
| seong_yejun vs Bryan | 4–4 | 50.00% |
| seong_yejun vs Miary Zo | 3–5 | 37.50% |
| seong_yejun vs Asuka | 6–1 | 85.71% |
| seong_yejun vs Lili | 4–3 | 57.14% |
| seong_yejun vs King | 5–1 | 83.33% |
| seong_yejun vs Xiaoyu | 3–2 | 60.00% |
| seong_yejun vs Devil Jin | 3–2 | 60.00% |
| seong_yejun vs Steve | 1–3 | 25.00% |
| seong_yejun vs Lars | 4–0 | 100.00% |
| seong_yejun vs Jun | 1–3 | 25.00% |
| seong_yejun vs Victor | 2–2 | 50.00% |
| seong_yejun vs Clive | 2–2 | 50.00% |
| seong_yejun vs Hwoarang | 2–1 | 66.67% |
| seong_yejun vs Armor King | 3–0 | 100.00% |
| seong_yejun vs Nina | 1–1 | 50.00% |
| seong_yejun vs Lee | 2–0 | 100.00% |
| seong_yejun vs Leroy | 2–0 | 100.00% |
| seong_yejun vs Raven | 1–1 | 50.00% |
| seong_yejun vs Heihachi | 2–0 | 100.00% |
| seong_yejun vs Yoshimitsu | 0–1 | 0.00% |
| seong_yejun vs Jack-8 | 0–1 | 0.00% |
| seong_yejun vs Alisa | 1–0 | 100.00% |
| seong_yejun vs Claudio | 0–1 | 0.00% |
| seong_yejun vs Shaheen | 1–0 | 100.00% |
| seong_yejun vs Azucena | 0–1 | 0.00% |
| seong_yejun vs Eddy | 0–1 | 0.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.