| Koala vs Jin | 26–33 | 44.07% |
| Koala vs Eddy | 31–22 | 58.49% |
| Koala vs Reina | 19–29 | 39.58% |
| Koala vs Hwoarang | 23–21 | 52.27% |
| Koala vs Law | 24–18 | 57.14% |
| Koala vs Kazuya | 20–20 | 50.00% |
| Koala vs King | 23–11 | 67.65% |
| Koala vs Bryan | 12–16 | 42.86% |
| Koala vs Steve | 15–12 | 55.56% |
| Koala vs Victor | 14–12 | 53.85% |
| Koala vs Dragunov | 15–7 | 68.18% |
| Koala vs Lili | 12–9 | 57.14% |
| Koala vs Paul | 5–14 | 26.32% |
| Koala vs Yoshimitsu | 6–13 | 31.58% |
| Koala vs Leroy | 12–7 | 63.16% |
| Koala vs Lars | 7–11 | 38.89% |
| Koala vs Jun | 9–9 | 50.00% |
| Koala vs Asuka | 9–5 | 64.29% |
| Koala vs Nina | 10–4 | 71.43% |
| Koala vs Leo | 4–8 | 33.33% |
| Koala vs Xiaoyu | 6–5 | 54.55% |
| Koala vs Alisa | 5–6 | 45.45% |
| Koala vs Jack-8 | 5–5 | 50.00% |
| Koala vs Devil Jin | 7–2 | 77.78% |
| Koala vs Claudio | 8–1 | 88.89% |
| Koala vs Azucena | 6–3 | 66.67% |
| Koala vs Lee | 2–6 | 25.00% |
| Koala vs Kuma | 4–3 | 57.14% |
| Koala vs Zafina | 2–5 | 28.57% |
| Koala vs Heihachi | 3–3 | 50.00% |
| Koala vs Shaheen | 2–3 | 40.00% |
| Koala vs Feng | 1–3 | 25.00% |
| Koala vs Raven | 0–4 | 0.00% |
| Koala vs Clive | 1–2 | 33.33% |
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.