| Professor Kai vs Reina | 23–19 | 54.76% |
| Professor Kai vs Kazuya | 15–21 | 41.67% |
| Professor Kai vs King | 13–22 | 37.14% |
| Professor Kai vs Eddy | 11–20 | 35.48% |
| Professor Kai vs Jin | 14–16 | 46.67% |
| Professor Kai vs Law | 11–18 | 37.93% |
| Professor Kai vs Hwoarang | 14–12 | 53.85% |
| Professor Kai vs Bryan | 17–6 | 73.91% |
| Professor Kai vs Leroy | 5–15 | 25.00% |
| Professor Kai vs Jun | 6–14 | 30.00% |
| Professor Kai vs Steve | 8–11 | 42.11% |
| Professor Kai vs Asuka | 6–13 | 31.58% |
| Professor Kai vs Lili | 11–8 | 57.89% |
| Professor Kai vs Lars | 11–7 | 61.11% |
| Professor Kai vs Paul | 4–11 | 26.67% |
| Professor Kai vs Yoshimitsu | 9–5 | 64.29% |
| Professor Kai vs Jack-8 | 7–7 | 50.00% |
| Professor Kai vs Nina | 6–8 | 42.86% |
| Professor Kai vs Azucena | 3–11 | 21.43% |
| Professor Kai vs Dragunov | 10–3 | 76.92% |
| Professor Kai vs Devil Jin | 3–7 | 30.00% |
| Professor Kai vs Leo | 5–5 | 50.00% |
| Professor Kai vs Raven | 4–6 | 40.00% |
| Professor Kai vs Feng | 4–5 | 44.44% |
| Professor Kai vs Xiaoyu | 5–3 | 62.50% |
| Professor Kai vs Shaheen | 4–3 | 57.14% |
| Professor Kai vs Claudio | 1–5 | 16.67% |
| Professor Kai vs Victor | 3–3 | 50.00% |
| Professor Kai vs Kuma | 1–4 | 20.00% |
| Professor Kai vs Alisa | 2–2 | 50.00% |
| Professor Kai vs Lee | 0–2 | 0.00% |
| Professor Kai vs Lidia | 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.