| IIII vs King | 6–10 | 37.50% |
| IIII vs Clive | 5–7 | 41.67% |
| IIII vs Reina | 4–5 | 44.44% |
| IIII vs Yoshimitsu | 6–2 | 75.00% |
| IIII vs Heihachi | 6–2 | 75.00% |
| IIII vs Law | 4–3 | 57.14% |
| IIII vs Xiaoyu | 3–3 | 50.00% |
| IIII vs Kazuya | 3–3 | 50.00% |
| IIII vs Nina | 1–4 | 20.00% |
| IIII vs Hwoarang | 3–1 | 75.00% |
| IIII vs Lili | 1–3 | 25.00% |
| IIII vs Dragunov | 3–1 | 75.00% |
| IIII vs Kuma | 0–4 | 0.00% |
| IIII vs Jun | 0–4 | 0.00% |
| IIII vs Victor | 1–3 | 25.00% |
| IIII vs Jin | 1–2 | 33.33% |
| IIII vs Steve | 1–2 | 33.33% |
| IIII vs Bryan | 1–1 | 50.00% |
| IIII vs Jack-8 | 0–2 | 0.00% |
| IIII vs Alisa | 0–2 | 0.00% |
| IIII vs Leroy | 1–1 | 50.00% |
| IIII vs Raven | 1–1 | 50.00% |
| IIII vs Eddy | 0–2 | 0.00% |
| IIII vs Lidia | 1–1 | 50.00% |
| IIII vs Feng | 1–0 | 100.00% |
| IIII vs Shaheen | 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.