| Nitemare504 vs King | 39–36 | 52.00% |
| Nitemare504 vs Kazuya | 25–42 | 37.31% |
| Nitemare504 vs Steve | 35–30 | 53.85% |
| Nitemare504 vs Bryan | 25–33 | 43.10% |
| Nitemare504 vs Law | 28–24 | 53.85% |
| Nitemare504 vs Dragunov | 20–32 | 38.46% |
| Nitemare504 vs Jun | 23–27 | 46.00% |
| Nitemare504 vs Clive | 23–26 | 46.94% |
| Nitemare504 vs Jin | 18–20 | 47.37% |
| Nitemare504 vs Victor | 23–14 | 62.16% |
| Nitemare504 vs Paul | 17–19 | 47.22% |
| Nitemare504 vs Eddy | 20–16 | 55.56% |
| Nitemare504 vs Hwoarang | 13–22 | 37.14% |
| Nitemare504 vs Yoshimitsu | 17–17 | 50.00% |
| Nitemare504 vs Reina | 14–19 | 42.42% |
| Nitemare504 vs Alisa | 12–19 | 38.71% |
| Nitemare504 vs Nina | 11–20 | 35.48% |
| Nitemare504 vs Lili | 12–18 | 40.00% |
| Nitemare504 vs Azucena | 10–17 | 37.04% |
| Nitemare504 vs Xiaoyu | 6–20 | 23.08% |
| Nitemare504 vs Leo | 9–16 | 36.00% |
| Nitemare504 vs Jack-8 | 9–14 | 39.13% |
| Nitemare504 vs Lars | 9–13 | 40.91% |
| Nitemare504 vs Heihachi | 10–12 | 45.45% |
| Nitemare504 vs Feng | 9–12 | 42.86% |
| Nitemare504 vs Asuka | 9–11 | 45.00% |
| Nitemare504 vs Lee | 8–12 | 40.00% |
| Nitemare504 vs Miary Zo | 10–10 | 50.00% |
| Nitemare504 vs Lidia | 12–5 | 70.59% |
| Nitemare504 vs Fahkumram | 6–8 | 42.86% |
| Nitemare504 vs Claudio | 6–7 | 46.15% |
| Nitemare504 vs Leroy | 6–7 | 46.15% |
| Nitemare504 vs Armor King | 3–10 | 23.08% |
| Nitemare504 vs Raven | 8–3 | 72.73% |
| Nitemare504 vs Shaheen | 2–7 | 22.22% |
| Nitemare504 vs Devil Jin | 6–2 | 75.00% |
| Nitemare504 vs Kuma | 4–4 | 50.00% |
| Nitemare504 vs Zafina | 1–4 | 20.00% |
| Nitemare504 vs Anna | 1–2 | 33.33% |
| Nitemare504 vs Panda | 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.