| nightmare king vs Kazuya | 54–63 | 46.15% |
| nightmare king vs King | 53–45 | 54.08% |
| nightmare king vs Jin | 37–57 | 39.36% |
| nightmare king vs Steve | 27–27 | 50.00% |
| nightmare king vs Heihachi | 31–23 | 57.41% |
| nightmare king vs Hwoarang | 16–27 | 37.21% |
| nightmare king vs Bryan | 18–20 | 47.37% |
| nightmare king vs Dragunov | 13–23 | 36.11% |
| nightmare king vs Armor King | 19–15 | 55.88% |
| nightmare king vs Nina | 9–20 | 31.03% |
| nightmare king vs Paul | 6–21 | 22.22% |
| nightmare king vs Law | 6–20 | 23.08% |
| nightmare king vs Eddy | 10–15 | 40.00% |
| nightmare king vs Devil Jin | 9–15 | 37.50% |
| nightmare king vs Lee | 9–13 | 40.91% |
| nightmare king vs Reina | 8–13 | 38.10% |
| nightmare king vs Yoshimitsu | 13–7 | 65.00% |
| nightmare king vs Lars | 7–10 | 41.18% |
| nightmare king vs Jun | 4–12 | 25.00% |
| nightmare king vs Miary Zo | 8–7 | 53.33% |
| nightmare king vs Shaheen | 7–7 | 50.00% |
| nightmare king vs Clive | 6–8 | 42.86% |
| nightmare king vs Anna | 7–7 | 50.00% |
| nightmare king vs Asuka | 8–5 | 61.54% |
| nightmare king vs Azucena | 4–8 | 33.33% |
| nightmare king vs Victor | 7–5 | 58.33% |
| nightmare king vs Fahkumram | 3–8 | 27.27% |
| nightmare king vs Alisa | 0–8 | 0.00% |
| nightmare king vs Lili | 2–4 | 33.33% |
| nightmare king vs Zafina | 4–2 | 66.67% |
| nightmare king vs Xiaoyu | 3–2 | 60.00% |
| nightmare king vs Feng | 2–3 | 40.00% |
| nightmare king vs Raven | 0–5 | 0.00% |
| nightmare king vs Claudio | 2–1 | 66.67% |
| nightmare king vs Lidia | 2–1 | 66.67% |
| nightmare king vs Jack-8 | 1–1 | 50.00% |
| nightmare king vs Leroy | 1–1 | 50.00% |
| nightmare king vs Leo | 1–0 | 100.00% |
| nightmare king vs Kuma | 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.