| KeiWestern vs King | 17–19 | 47.22% |
| KeiWestern vs Jin | 13–15 | 46.43% |
| KeiWestern vs Reina | 14–14 | 50.00% |
| KeiWestern vs Kazuya | 8–15 | 34.78% |
| KeiWestern vs Hwoarang | 8–14 | 36.36% |
| KeiWestern vs Lars | 7–14 | 33.33% |
| KeiWestern vs Bryan | 9–10 | 47.37% |
| KeiWestern vs Dragunov | 10–8 | 55.56% |
| KeiWestern vs Eddy | 4–13 | 23.53% |
| KeiWestern vs Law | 6–9 | 40.00% |
| KeiWestern vs Xiaoyu | 10–5 | 66.67% |
| KeiWestern vs Asuka | 8–7 | 53.33% |
| KeiWestern vs Kuma | 5–8 | 38.46% |
| KeiWestern vs Lili | 5–7 | 41.67% |
| KeiWestern vs Alisa | 5–7 | 41.67% |
| KeiWestern vs Azucena | 6–5 | 54.55% |
| KeiWestern vs Steve | 6–4 | 60.00% |
| KeiWestern vs Nina | 4–6 | 40.00% |
| KeiWestern vs Raven | 7–3 | 70.00% |
| KeiWestern vs Yoshimitsu | 3–5 | 37.50% |
| KeiWestern vs Lee | 5–2 | 71.43% |
| KeiWestern vs Jun | 3–4 | 42.86% |
| KeiWestern vs Lidia | 2–5 | 28.57% |
| KeiWestern vs Paul | 2–4 | 33.33% |
| KeiWestern vs Devil Jin | 2–3 | 40.00% |
| KeiWestern vs Victor | 3–2 | 60.00% |
| KeiWestern vs Heihachi | 3–2 | 60.00% |
| KeiWestern vs Jack-8 | 0–4 | 0.00% |
| KeiWestern vs Leo | 2–2 | 50.00% |
| KeiWestern vs Claudio | 0–3 | 0.00% |
| KeiWestern vs Leroy | 2–1 | 66.67% |
| KeiWestern vs Feng | 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.