| Kieffer vs Jin | 19–33 | 36.54% |
| Kieffer vs Kazuya | 16–21 | 43.24% |
| Kieffer vs Reina | 20–16 | 55.56% |
| Kieffer vs King | 15–17 | 46.88% |
| Kieffer vs Hwoarang | 10–16 | 38.46% |
| Kieffer vs Yoshimitsu | 13–10 | 56.52% |
| Kieffer vs Steve | 16–6 | 72.73% |
| Kieffer vs Eddy | 8–14 | 36.36% |
| Kieffer vs Victor | 10–11 | 47.62% |
| Kieffer vs Dragunov | 12–8 | 60.00% |
| Kieffer vs Law | 7–12 | 36.84% |
| Kieffer vs Jun | 12–7 | 63.16% |
| Kieffer vs Asuka | 11–7 | 61.11% |
| Kieffer vs Bryan | 4–13 | 23.53% |
| Kieffer vs Lee | 10–6 | 62.50% |
| Kieffer vs Azucena | 8–8 | 50.00% |
| Kieffer vs Lili | 9–5 | 64.29% |
| Kieffer vs Lars | 7–7 | 50.00% |
| Kieffer vs Alisa | 3–10 | 23.08% |
| Kieffer vs Leo | 8–3 | 72.73% |
| Kieffer vs Paul | 5–5 | 50.00% |
| Kieffer vs Xiaoyu | 6–4 | 60.00% |
| Kieffer vs Devil Jin | 5–5 | 50.00% |
| Kieffer vs Nina | 2–8 | 20.00% |
| Kieffer vs Feng | 2–5 | 28.57% |
| Kieffer vs Raven | 1–6 | 14.29% |
| Kieffer vs Shaheen | 4–0 | 100.00% |
| Kieffer vs Panda | 0–3 | 0.00% |
| Kieffer vs Kuma | 0–2 | 0.00% |
| Kieffer vs Leroy | 1–1 | 50.00% |
| Kieffer vs Jack-8 | 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.