| Koyeon vs Hwoarang | 8–6 | 57.14% |
| Koyeon vs Reina | 7–7 | 50.00% |
| Koyeon vs Law | 4–6 | 40.00% |
| Koyeon vs Yoshimitsu | 7–3 | 70.00% |
| Koyeon vs Jin | 10–0 | 100.00% |
| Koyeon vs Kazuya | 4–3 | 57.14% |
| Koyeon vs Lee | 3–4 | 42.86% |
| Koyeon vs King | 1–5 | 16.67% |
| Koyeon vs Lili | 4–2 | 66.67% |
| Koyeon vs Armor King | 2–4 | 33.33% |
| Koyeon vs Steve | 4–1 | 80.00% |
| Koyeon vs Shaheen | 3–2 | 60.00% |
| Koyeon vs Victor | 3–2 | 60.00% |
| Koyeon vs Lidia | 3–2 | 60.00% |
| Koyeon vs Devil Jin | 2–2 | 50.00% |
| Koyeon vs Leo | 4–0 | 100.00% |
| Koyeon vs Miary Zo | 2–2 | 50.00% |
| Koyeon vs Paul | 3–0 | 100.00% |
| Koyeon vs Bryan | 2–1 | 66.67% |
| Koyeon vs Asuka | 1–2 | 33.33% |
| Koyeon vs Nina | 3–0 | 100.00% |
| Koyeon vs Raven | 2–1 | 66.67% |
| Koyeon vs Heihachi | 1–2 | 33.33% |
| Koyeon vs Xiaoyu | 2–0 | 100.00% |
| Koyeon vs Alisa | 0–2 | 0.00% |
| Koyeon vs Jun | 2–0 | 100.00% |
| Koyeon vs Anna | 2–0 | 100.00% |
| Koyeon vs Dragunov | 1–0 | 100.00% |
| Koyeon vs Zafina | 1–0 | 100.00% |
| Koyeon vs Leroy | 1–0 | 100.00% |
| Koyeon vs Azucena | 1–0 | 100.00% |
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.