| Ierukah vs Reina | 12–11 | 52.17% |
| Ierukah vs Lili | 7–7 | 50.00% |
| Ierukah vs King | 3–10 | 23.08% |
| Ierukah vs Bryan | 6–7 | 46.15% |
| Ierukah vs Heihachi | 4–8 | 33.33% |
| Ierukah vs Jun | 5–6 | 45.45% |
| Ierukah vs Azucena | 3–8 | 27.27% |
| Ierukah vs Kazuya | 0–10 | 0.00% |
| Ierukah vs Jin | 2–7 | 22.22% |
| Ierukah vs Dragunov | 4–5 | 44.44% |
| Ierukah vs Hwoarang | 2–6 | 25.00% |
| Ierukah vs Asuka | 1–7 | 12.50% |
| Ierukah vs Lee | 3–4 | 42.86% |
| Ierukah vs Yoshimitsu | 3–3 | 50.00% |
| Ierukah vs Feng | 1–5 | 16.67% |
| Ierukah vs Lars | 1–5 | 16.67% |
| Ierukah vs Alisa | 1–5 | 16.67% |
| Ierukah vs Steve | 2–3 | 40.00% |
| Ierukah vs Eddy | 1–4 | 20.00% |
| Ierukah vs Law | 0–4 | 0.00% |
| Ierukah vs Xiaoyu | 2–2 | 50.00% |
| Ierukah vs Lidia | 2–2 | 50.00% |
| Ierukah vs Devil Jin | 1–2 | 33.33% |
| Ierukah vs Claudio | 2–1 | 66.67% |
| Ierukah vs Jack-8 | 0–2 | 0.00% |
| Ierukah vs Leroy | 1–1 | 50.00% |
| Ierukah vs Victor | 0–2 | 0.00% |
| Ierukah vs Paul | 0–1 | 0.00% |
| Ierukah vs Leo | 0–1 | 0.00% |
| Ierukah vs Nina | 0–1 | 0.00% |
| Ierukah vs Anna | 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.