| irena vs Jin | 32–35 | 47.76% |
| irena vs Law | 14–31 | 31.11% |
| irena vs Dragunov | 28–17 | 62.22% |
| irena vs Kazuya | 24–18 | 57.14% |
| irena vs Bryan | 23–14 | 62.16% |
| irena vs King | 22–10 | 68.75% |
| irena vs Devil Jin | 15–15 | 50.00% |
| irena vs Lee | 11–18 | 37.93% |
| irena vs Heihachi | 17–11 | 60.71% |
| irena vs Paul | 11–16 | 40.74% |
| irena vs Lili | 18–9 | 66.67% |
| irena vs Asuka | 9–16 | 36.00% |
| irena vs Clive | 13–9 | 59.09% |
| irena vs Shaheen | 17–3 | 85.00% |
| irena vs Yoshimitsu | 11–8 | 57.89% |
| irena vs Feng | 13–4 | 76.47% |
| irena vs Hwoarang | 8–8 | 50.00% |
| irena vs Steve | 11–5 | 68.75% |
| irena vs Reina | 11–5 | 68.75% |
| irena vs Jun | 10–5 | 66.67% |
| irena vs Nina | 6–8 | 42.86% |
| irena vs Leroy | 7–7 | 50.00% |
| irena vs Xiaoyu | 9–4 | 69.23% |
| irena vs Jack-8 | 6–7 | 46.15% |
| irena vs Azucena | 9–3 | 75.00% |
| irena vs Lars | 2–9 | 18.18% |
| irena vs Eddy | 6–5 | 54.55% |
| irena vs Leo | 6–4 | 60.00% |
| irena vs Alisa | 5–4 | 55.56% |
| irena vs Victor | 4–2 | 66.67% |
| irena vs Armor King | 6–0 | 100.00% |
| irena vs Kuma | 2–1 | 66.67% |
| irena vs Zafina | 2–1 | 66.67% |
| irena vs Lidia | 2–0 | 100.00% |
| irena vs Anna | 2–0 | 100.00% |
| irena vs Claudio | 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.