| Kaii vs King | 162–216–1 | 42.86% |
| Kaii vs Kazuya | 169–206 | 45.07% |
| Kaii vs Jin | 119–186 | 39.02% |
| Kaii vs Reina | 117–154 | 43.17% |
| Kaii vs Steve | 151–119 | 55.93% |
| Kaii vs Hwoarang | 105–152 | 40.86% |
| Kaii vs Bryan | 102–136 | 42.86% |
| Kaii vs Law | 74–123 | 37.56% |
| Kaii vs Asuka | 101–81 | 55.49% |
| Kaii vs Jun | 84–96 | 46.67% |
| Kaii vs Azucena | 92–84 | 52.27% |
| Kaii vs Yoshimitsu | 88–83–1 | 51.46% |
| Kaii vs Eddy | 63–106 | 37.28% |
| Kaii vs Lee | 65–103 | 38.69% |
| Kaii vs Lili | 73–94 | 43.71% |
| Kaii vs Paul | 68–98 | 40.96% |
| Kaii vs Dragunov | 53–97 | 35.33% |
| Kaii vs Xiaoyu | 49–64 | 43.36% |
| Kaii vs Lars | 51–60 | 45.95% |
| Kaii vs Victor | 53–46 | 53.54% |
| Kaii vs Leo | 34–57 | 37.36% |
| Kaii vs Lidia | 43–45 | 48.86% |
| Kaii vs Nina | 42–43 | 49.41% |
| Kaii vs Heihachi | 39–44 | 46.99% |
| Kaii vs Alisa | 29–50 | 36.71% |
| Kaii vs Devil Jin | 28–44 | 38.89% |
| Kaii vs Raven | 28–38 | 42.42% |
| Kaii vs Feng | 26–38 | 40.62% |
| Kaii vs Clive | 28–35 | 44.44% |
| Kaii vs Jack-8 | 30–32 | 48.39% |
| Kaii vs Leroy | 28–33 | 45.90% |
| Kaii vs Claudio | 22–26 | 45.83% |
| Kaii vs Kuma | 14–32 | 30.43% |
| Kaii vs Shaheen | 15–27 | 35.71% |
| Kaii vs Zafina | 14–21 | 40.00% |
| Kaii vs Fahkumram | 8–7 | 53.33% |
| Kaii vs Panda | 5–7 | 41.67% |
| Kaii vs Miary Zo | 3–6 | 33.33% |
| Kaii vs Anna | 3–0 | 100.00% |
| Kaii vs Armor King | 0–1 | 0.00% |
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.