| Niepper vs Jin | 69–60 | 53.49% |
| Niepper vs Kazuya | 69–46 | 60.00% |
| Niepper vs Bryan | 46–58 | 44.23% |
| Niepper vs Hwoarang | 40–59–1 | 40.40% |
| Niepper vs Paul | 36–35 | 50.70% |
| Niepper vs Alisa | 39–22–1 | 63.93% |
| Niepper vs Dragunov | 28–30 | 48.28% |
| Niepper vs Lili | 27–28–1 | 49.09% |
| Niepper vs Reina | 27–29 | 48.21% |
| Niepper vs King | 24–31 | 43.64% |
| Niepper vs Lee | 20–35 | 36.36% |
| Niepper vs Steve | 23–30 | 43.40% |
| Niepper vs Law | 25–22 | 53.19% |
| Niepper vs Heihachi | 22–24 | 47.83% |
| Niepper vs Devil Jin | 21–23 | 47.73% |
| Niepper vs Asuka | 19–18 | 51.35% |
| Niepper vs Feng | 25–12 | 67.57% |
| Niepper vs Yoshimitsu | 19–17 | 52.78% |
| Niepper vs Leo | 11–22 | 33.33% |
| Niepper vs Nina | 24–9 | 72.73% |
| Niepper vs Eddy | 14–18 | 43.75% |
| Niepper vs Jun | 12–19 | 38.71% |
| Niepper vs Azucena | 13–17 | 43.33% |
| Niepper vs Xiaoyu | 21–8 | 72.41% |
| Niepper vs Raven | 16–12 | 57.14% |
| Niepper vs Victor | 13–14 | 48.15% |
| Niepper vs Claudio | 11–14 | 44.00% |
| Niepper vs Leroy | 12–12 | 50.00% |
| Niepper vs Lars | 10–13 | 43.48% |
| Niepper vs Jack-8 | 8–9 | 47.06% |
| Niepper vs Shaheen | 9–7 | 56.25% |
| Niepper vs Zafina | 8–7 | 53.33% |
| Niepper vs Kuma | 9–5 | 64.29% |
| Niepper vs Clive | 4–7 | 36.36% |
| Niepper vs Panda | 4–6 | 40.00% |
| Niepper vs Lidia | 3–6 | 33.33% |
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.