| Ittosai vs Kazuya | 366–319 | 53.43% |
| Ittosai vs Jin | 244–265 | 47.94% |
| Ittosai vs King | 226–215 | 51.25% |
| Ittosai vs Hwoarang | 175–255 | 40.70% |
| Ittosai vs Dragunov | 195–202 | 49.12% |
| Ittosai vs Bryan | 208–182 | 53.33% |
| Ittosai vs Heihachi | 231–151 | 60.47% |
| Ittosai vs Reina | 191–174 | 52.33% |
| Ittosai vs Steve | 153–138 | 52.58% |
| Ittosai vs Paul | 132–153–1 | 46.32% |
| Ittosai vs Devil Jin | 98–138 | 41.53% |
| Ittosai vs Armor King | 98–118 | 45.37% |
| Ittosai vs Lili | 96–110 | 46.60% |
| Ittosai vs Asuka | 100–90 | 52.63% |
| Ittosai vs Yoshimitsu | 88–92 | 48.89% |
| Ittosai vs Alisa | 64–105 | 37.87% |
| Ittosai vs Lee | 73–96 | 43.20% |
| Ittosai vs Azucena | 79–76 | 50.97% |
| Ittosai vs Jun | 79–68 | 53.74% |
| Ittosai vs Lidia | 69–78 | 46.94% |
| Ittosai vs Victor | 80–65 | 55.17% |
| Ittosai vs Law | 82–62 | 56.94% |
| Ittosai vs Lars | 56–87 | 39.16% |
| Ittosai vs Nina | 50–82 | 37.88% |
| Ittosai vs Leroy | 57–72–1 | 44.19% |
| Ittosai vs Anna | 52–71 | 42.28% |
| Ittosai vs Fahkumram | 61–62 | 49.59% |
| Ittosai vs Feng | 53–65 | 44.92% |
| Ittosai vs Leo | 45–69 | 39.47% |
| Ittosai vs Claudio | 48–62 | 43.64% |
| Ittosai vs Clive | 48–59 | 44.86% |
| Ittosai vs Xiaoyu | 54–51 | 51.43% |
| Ittosai vs Jack-8 | 39–57 | 40.62% |
| Ittosai vs Shaheen | 37–38 | 49.33% |
| Ittosai vs Eddy | 38–34 | 52.78% |
| Ittosai vs Raven | 35–31 | 53.03% |
| Ittosai vs Zafina | 19–26 | 42.22% |
| Ittosai vs Miary Zo | 19–22 | 46.34% |
| Ittosai vs Kuma | 3–24 | 11.11% |
| Ittosai vs Panda | 6–5 | 54.55% |
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.