| Iyoooshi vs Jin | 15–13 | 53.57% |
| Iyoooshi vs Bryan | 14–9 | 60.87% |
| Iyoooshi vs Eddy | 13–9 | 59.09% |
| Iyoooshi vs King | 11–10 | 52.38% |
| Iyoooshi vs Steve | 12–7 | 63.16% |
| Iyoooshi vs Kazuya | 8–5 | 61.54% |
| Iyoooshi vs Jun | 11–2 | 84.62% |
| Iyoooshi vs Xiaoyu | 9–3 | 75.00% |
| Iyoooshi vs Lee | 7–4 | 63.64% |
| Iyoooshi vs Hwoarang | 7–3 | 70.00% |
| Iyoooshi vs Reina | 5–4 | 55.56% |
| Iyoooshi vs Law | 3–5 | 37.50% |
| Iyoooshi vs Asuka | 4–3 | 57.14% |
| Iyoooshi vs Paul | 3–3 | 50.00% |
| Iyoooshi vs Leo | 4–2 | 66.67% |
| Iyoooshi vs Alisa | 4–2 | 66.67% |
| Iyoooshi vs Nina | 4–2 | 66.67% |
| Iyoooshi vs Lidia | 2–4 | 33.33% |
| Iyoooshi vs Jack-8 | 2–3 | 40.00% |
| Iyoooshi vs Dragunov | 4–1 | 80.00% |
| Iyoooshi vs Lars | 4–1 | 80.00% |
| Iyoooshi vs Kuma | 2–3 | 40.00% |
| Iyoooshi vs Leroy | 1–4 | 20.00% |
| Iyoooshi vs Heihachi | 4–1 | 80.00% |
| Iyoooshi vs Yoshimitsu | 0–4 | 0.00% |
| Iyoooshi vs Devil Jin | 4–0 | 100.00% |
| Iyoooshi vs Feng | 2–2 | 50.00% |
| Iyoooshi vs Lili | 4–0 | 100.00% |
| Iyoooshi vs Shaheen | 2–2 | 50.00% |
| Iyoooshi vs Raven | 3–1 | 75.00% |
| Iyoooshi vs Clive | 1–2 | 33.33% |
| Iyoooshi vs Victor | 2–0 | 100.00% |
| Iyoooshi vs Claudio | 1–0 | 100.00% |
| Iyoooshi vs Anna | 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.