| Nitemare vs King | 22–20–1 | 52.38% |
| Nitemare vs Hwoarang | 17–21 | 44.74% |
| Nitemare vs Reina | 16–16 | 50.00% |
| Nitemare vs Law | 11–17 | 39.29% |
| Nitemare vs Eddy | 4–23 | 14.81% |
| Nitemare vs Kazuya | 10–15 | 40.00% |
| Nitemare vs Bryan | 8–16 | 33.33% |
| Nitemare vs Lili | 9–14 | 39.13% |
| Nitemare vs Jin | 6–15 | 28.57% |
| Nitemare vs Jun | 10–11 | 47.62% |
| Nitemare vs Nina | 8–11 | 42.11% |
| Nitemare vs Steve | 9–9 | 50.00% |
| Nitemare vs Azucena | 9–9 | 50.00% |
| Nitemare vs Victor | 8–10 | 44.44% |
| Nitemare vs Lidia | 7–11 | 38.89% |
| Nitemare vs Dragunov | 3–13 | 18.75% |
| Nitemare vs Lars | 6–10 | 37.50% |
| Nitemare vs Claudio | 6–10 | 37.50% |
| Nitemare vs Kuma | 7–8 | 46.67% |
| Nitemare vs Leo | 3–9 | 25.00% |
| Nitemare vs Paul | 4–6 | 40.00% |
| Nitemare vs Asuka | 1–9 | 10.00% |
| Nitemare vs Devil Jin | 3–6 | 33.33% |
| Nitemare vs Lee | 7–2 | 77.78% |
| Nitemare vs Yoshimitsu | 3–5 | 37.50% |
| Nitemare vs Xiaoyu | 3–5 | 37.50% |
| Nitemare vs Shaheen | 5–3 | 62.50% |
| Nitemare vs Jack-8 | 3–4 | 42.86% |
| Nitemare vs Leroy | 5–2 | 71.43% |
| Nitemare vs Raven | 2–3 | 40.00% |
| Nitemare vs Heihachi | 2–3 | 40.00% |
| Nitemare vs Alisa | 3–1 | 75.00% |
| Nitemare vs Panda | 0–3 | 0.00% |
| Nitemare vs Feng | 0–2 | 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.