| Itachii vs Steve | 13–16 | 44.83% |
| Itachii vs Jin | 11–16 | 40.74% |
| Itachii vs Hwoarang | 12–11 | 52.17% |
| Itachii vs Law | 7–15 | 31.82% |
| Itachii vs King | 4–13 | 23.53% |
| Itachii vs Paul | 6–9 | 40.00% |
| Itachii vs Reina | 7–5 | 58.33% |
| Itachii vs Lili | 7–3 | 70.00% |
| Itachii vs Eddy | 4–6 | 40.00% |
| Itachii vs Nina | 5–4 | 55.56% |
| Itachii vs Yoshimitsu | 2–6 | 25.00% |
| Itachii vs Bryan | 2–6 | 25.00% |
| Itachii vs Devil Jin | 2–6 | 25.00% |
| Itachii vs Alisa | 2–6 | 25.00% |
| Itachii vs Jun | 4–4 | 50.00% |
| Itachii vs Leo | 5–2 | 71.43% |
| Itachii vs Azucena | 5–2 | 71.43% |
| Itachii vs Xiaoyu | 1–5 | 16.67% |
| Itachii vs Claudio | 3–3 | 50.00% |
| Itachii vs Jack-8 | 4–1 | 80.00% |
| Itachii vs Dragunov | 3–2 | 60.00% |
| Itachii vs Leroy | 4–1 | 80.00% |
| Itachii vs Victor | 3–2 | 60.00% |
| Itachii vs Kazuya | 2–2 | 50.00% |
| Itachii vs Feng | 0–4 | 0.00% |
| Itachii vs Lars | 3–1 | 75.00% |
| Itachii vs Asuka | 3–0 | 100.00% |
| Itachii vs Shaheen | 0–3 | 0.00% |
| Itachii vs Panda | 0–3 | 0.00% |
| Itachii vs Lee | 1–1 | 50.00% |
| Itachii vs Zafina | 0–2 | 0.00% |
| Itachii vs Kuma | 0–1 | 0.00% |
| Itachii vs Raven | 1–0 | 100.00% |
| Itachii vs Heihachi | 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.