| Nappy HeadNi99a vs King | 55–69 | 44.35% |
| Nappy HeadNi99a vs Jin | 56–68 | 45.16% |
| Nappy HeadNi99a vs Reina | 59–48 | 55.14% |
| Nappy HeadNi99a vs Kazuya | 46–54 | 46.00% |
| Nappy HeadNi99a vs Bryan | 40–59 | 40.40% |
| Nappy HeadNi99a vs Steve | 37–58 | 38.95% |
| Nappy HeadNi99a vs Hwoarang | 46–44 | 51.11% |
| Nappy HeadNi99a vs Law | 47–41 | 53.41% |
| Nappy HeadNi99a vs Jun | 42–40 | 51.22% |
| Nappy HeadNi99a vs Paul | 40–32 | 55.56% |
| Nappy HeadNi99a vs Dragunov | 27–37 | 42.19% |
| Nappy HeadNi99a vs Lars | 29–32 | 47.54% |
| Nappy HeadNi99a vs Eddy | 20–41 | 32.79% |
| Nappy HeadNi99a vs Yoshimitsu | 26–27–1 | 49.06% |
| Nappy HeadNi99a vs Asuka | 27–26 | 50.94% |
| Nappy HeadNi99a vs Azucena | 24–27 | 47.06% |
| Nappy HeadNi99a vs Feng | 21–29 | 42.00% |
| Nappy HeadNi99a vs Lili | 16–34 | 32.00% |
| Nappy HeadNi99a vs Devil Jin | 17–29 | 36.96% |
| Nappy HeadNi99a vs Lee | 11–33 | 25.00% |
| Nappy HeadNi99a vs Nina | 18–20 | 47.37% |
| Nappy HeadNi99a vs Claudio | 17–20 | 45.95% |
| Nappy HeadNi99a vs Victor | 14–22 | 38.89% |
| Nappy HeadNi99a vs Raven | 12–22 | 35.29% |
| Nappy HeadNi99a vs Alisa | 14–19 | 42.42% |
| Nappy HeadNi99a vs Leo | 13–19 | 40.62% |
| Nappy HeadNi99a vs Leroy | 11–21 | 34.38% |
| Nappy HeadNi99a vs Jack-8 | 12–16 | 42.86% |
| Nappy HeadNi99a vs Heihachi | 15–13 | 53.57% |
| Nappy HeadNi99a vs Shaheen | 12–15 | 44.44% |
| Nappy HeadNi99a vs Xiaoyu | 10–16 | 38.46% |
| Nappy HeadNi99a vs Lidia | 11–15 | 42.31% |
| Nappy HeadNi99a vs Kuma | 5–7 | 41.67% |
| Nappy HeadNi99a vs Zafina | 0–9 | 0.00% |
| Nappy HeadNi99a vs Panda | 3–5 | 37.50% |
| Nappy HeadNi99a vs Clive | 4–1 | 80.00% |
| Nappy HeadNi99a vs Fahkumram | 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.