| Keiko vs King | 1–8 | 11.11% |
| Keiko vs Reina | 5–2 | 71.43% |
| Keiko vs Yoshimitsu | 0–5 | 0.00% |
| Keiko vs Jin | 0–4 | 0.00% |
| Keiko vs Leroy | 3–1 | 75.00% |
| Keiko vs Lidia | 2–2 | 50.00% |
| Keiko vs Heihachi | 0–3 | 0.00% |
| Keiko vs Bryan | 0–2 | 0.00% |
| Keiko vs Kazuya | 0–2 | 0.00% |
| Keiko vs Leo | 0–2 | 0.00% |
| Keiko vs Lars | 0–2 | 0.00% |
| Keiko vs Alisa | 0–2 | 0.00% |
| Keiko vs Claudio | 0–2 | 0.00% |
| Keiko vs Victor | 1–1 | 50.00% |
| Keiko vs Clive | 0–2 | 0.00% |
| Keiko vs Law | 1–0 | 100.00% |
| Keiko vs Jack-8 | 0–1 | 0.00% |
| Keiko vs Devil Jin | 1–0 | 100.00% |
| Keiko vs Lili | 1–0 | 100.00% |
| Keiko vs Lee | 0–1 | 0.00% |
| Keiko vs Azucena | 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.