| Nyghtmare vs King | 51–36 | 58.62% |
| Nyghtmare vs Hwoarang | 43–28 | 60.56% |
| Nyghtmare vs Clive | 31–36 | 46.27% |
| Nyghtmare vs Steve | 43–21 | 67.19% |
| Nyghtmare vs Kazuya | 35–28 | 55.56% |
| Nyghtmare vs Reina | 41–22 | 65.08% |
| Nyghtmare vs Law | 23–28 | 45.10% |
| Nyghtmare vs Nina | 20–30 | 40.00% |
| Nyghtmare vs Jun | 27–19 | 58.70% |
| Nyghtmare vs Heihachi | 15–24 | 38.46% |
| Nyghtmare vs Jin | 19–19 | 50.00% |
| Nyghtmare vs Asuka | 23–13 | 63.89% |
| Nyghtmare vs Dragunov | 21–12 | 63.64% |
| Nyghtmare vs Bryan | 15–15 | 50.00% |
| Nyghtmare vs Devil Jin | 5–20 | 20.00% |
| Nyghtmare vs Lili | 21–4 | 84.00% |
| Nyghtmare vs Leroy | 10–13 | 43.48% |
| Nyghtmare vs Eddy | 14–9 | 60.87% |
| Nyghtmare vs Lidia | 10–13 | 43.48% |
| Nyghtmare vs Fahkumram | 11–12 | 47.83% |
| Nyghtmare vs Lars | 10–11 | 47.62% |
| Nyghtmare vs Azucena | 11–9 | 55.00% |
| Nyghtmare vs Victor | 9–11 | 45.00% |
| Nyghtmare vs Lee | 12–7 | 63.16% |
| Nyghtmare vs Yoshimitsu | 12–6 | 66.67% |
| Nyghtmare vs Feng | 4–14 | 22.22% |
| Nyghtmare vs Claudio | 4–11 | 26.67% |
| Nyghtmare vs Jack-8 | 9–4 | 69.23% |
| Nyghtmare vs Leo | 5–8 | 38.46% |
| Nyghtmare vs Alisa | 9–4 | 69.23% |
| Nyghtmare vs Kuma | 2–11 | 15.38% |
| Nyghtmare vs Raven | 10–2 | 83.33% |
| Nyghtmare vs Armor King | 1–11 | 8.33% |
| Nyghtmare vs Xiaoyu | 7–4 | 63.64% |
| Nyghtmare vs Shaheen | 2–8 | 20.00% |
| Nyghtmare vs Panda | 1–4 | 20.00% |
| Nyghtmare vs Miary Zo | 3–2 | 60.00% |
| Nyghtmare vs Paul | 2–2 | 50.00% |
| Nyghtmare vs Anna | 4–0 | 100.00% |
| Nyghtmare vs Zafina | 0–3 | 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.