| Niki vs Eddy | 13–16 | 44.83% |
| Niki vs Jun | 16–8 | 66.67% |
| Niki vs Jin | 7–15 | 31.82% |
| Niki vs Hwoarang | 7–13 | 35.00% |
| Niki vs Reina | 3–16 | 15.79% |
| Niki vs Steve | 4–13 | 23.53% |
| Niki vs King | 5–11 | 31.25% |
| Niki vs Kazuya | 5–11 | 31.25% |
| Niki vs Lars | 4–8 | 33.33% |
| Niki vs Yoshimitsu | 6–4 | 60.00% |
| Niki vs Dragunov | 3–7 | 30.00% |
| Niki vs Nina | 6–4 | 60.00% |
| Niki vs Paul | 3–5 | 37.50% |
| Niki vs Bryan | 2–5 | 28.57% |
| Niki vs Devil Jin | 1–6 | 14.29% |
| Niki vs Kuma | 3–4 | 42.86% |
| Niki vs Victor | 5–2 | 71.43% |
| Niki vs Law | 1–5 | 16.67% |
| Niki vs Lili | 2–4 | 33.33% |
| Niki vs Alisa | 4–2 | 66.67% |
| Niki vs Asuka | 3–2 | 60.00% |
| Niki vs Azucena | 1–4 | 20.00% |
| Niki vs Claudio | 1–3 | 25.00% |
| Niki vs Raven | 0–4 | 0.00% |
| Niki vs Xiaoyu | 2–1 | 66.67% |
| Niki vs Feng | 0–3 | 0.00% |
| Niki vs Leo | 0–3 | 0.00% |
| Niki vs Lee | 1–2 | 33.33% |
| Niki vs Leroy | 1–2 | 33.33% |
| Niki vs Jack-8 | 0–1 | 0.00% |
| Niki vs Panda | 1–0 | 100.00% |
| Niki vs Zafina | 1–0 | 100.00% |
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.