| Itachii vs Kazuya | 144–165 | 46.60% |
| Itachii vs King | 111–135 | 45.12% |
| Itachii vs Reina | 120–114 | 51.28% |
| Itachii vs Jin | 98–131 | 42.79% |
| Itachii vs Heihachi | 118–100 | 54.13% |
| Itachii vs Bryan | 90–97 | 48.13% |
| Itachii vs Steve | 85–101 | 45.70% |
| Itachii vs Hwoarang | 70–91 | 43.48% |
| Itachii vs Dragunov | 58–89 | 39.46% |
| Itachii vs Law | 61–71 | 46.21% |
| Itachii vs Yoshimitsu | 62–66 | 48.44% |
| Itachii vs Lili | 51–76 | 40.16% |
| Itachii vs Devil Jin | 54–65 | 45.38% |
| Itachii vs Jun | 53–65 | 44.92% |
| Itachii vs Paul | 46–67 | 40.71% |
| Itachii vs Azucena | 55–56 | 49.55% |
| Itachii vs Asuka | 44–51 | 46.32% |
| Itachii vs Lee | 45–50 | 47.37% |
| Itachii vs Lidia | 45–40 | 52.94% |
| Itachii vs Lars | 33–50 | 39.76% |
| Itachii vs Xiaoyu | 31–51 | 37.80% |
| Itachii vs Clive | 28–52 | 35.00% |
| Itachii vs Victor | 38–36 | 51.35% |
| Itachii vs Armor King | 40–30 | 57.14% |
| Itachii vs Alisa | 24–39 | 38.10% |
| Itachii vs Nina | 25–34 | 42.37% |
| Itachii vs Leroy | 27–30 | 47.37% |
| Itachii vs Eddy | 25–22 | 53.19% |
| Itachii vs Leo | 23–21 | 52.27% |
| Itachii vs Feng | 15–28 | 34.88% |
| Itachii vs Jack-8 | 17–23 | 42.50% |
| Itachii vs Anna | 21–18 | 53.85% |
| Itachii vs Claudio | 19–18–1 | 51.35% |
| Itachii vs Fahkumram | 20–16 | 55.56% |
| Itachii vs Miary Zo | 23–11 | 67.65% |
| Itachii vs Zafina | 9–16 | 36.00% |
| Itachii vs Raven | 11–14 | 44.00% |
| Itachii vs Panda | 10–8 | 55.56% |
| Itachii vs Shaheen | 7–9 | 43.75% |
| Itachii vs Kuma | 3–6 | 33.33% |
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.