| Niki vs Jin | 61–75 | 44.85% |
| Niki vs Kazuya | 40–69 | 36.70% |
| Niki vs King | 41–67 | 37.96% |
| Niki vs Steve | 41–56 | 42.27% |
| Niki vs Dragunov | 30–65 | 31.58% |
| Niki vs Law | 30–58 | 34.09% |
| Niki vs Reina | 30–45 | 40.00% |
| Niki vs Heihachi | 27–46 | 36.99% |
| Niki vs Asuka | 29–42 | 40.85% |
| Niki vs Lars | 25–38 | 39.68% |
| Niki vs Bryan | 27–34 | 44.26% |
| Niki vs Hwoarang | 35–25 | 58.33% |
| Niki vs Fahkumram | 20–36 | 35.71% |
| Niki vs Jun | 25–30 | 45.45% |
| Niki vs Lili | 25–28 | 47.17% |
| Niki vs Paul | 12–38 | 24.00% |
| Niki vs Victor | 24–22 | 52.17% |
| Niki vs Lidia | 18–24 | 42.86% |
| Niki vs Lee | 12–26 | 31.58% |
| Niki vs Feng | 13–23 | 36.11% |
| Niki vs Devil Jin | 9–26 | 25.71% |
| Niki vs Alisa | 13–21 | 38.24% |
| Niki vs Yoshimitsu | 12–19 | 38.71% |
| Niki vs Leo | 14–17 | 45.16% |
| Niki vs Azucena | 18–8 | 69.23% |
| Niki vs Xiaoyu | 12–12 | 50.00% |
| Niki vs Claudio | 5–19 | 20.83% |
| Niki vs Armor King | 9–15 | 37.50% |
| Niki vs Nina | 8–13 | 38.10% |
| Niki vs Leroy | 4–15 | 21.05% |
| Niki vs Raven | 8–11 | 42.11% |
| Niki vs Eddy | 8–11 | 42.11% |
| Niki vs Anna | 6–13 | 31.58% |
| Niki vs Clive | 6–11 | 35.29% |
| Niki vs Shaheen | 7–7 | 50.00% |
| Niki vs Jack-8 | 3–6 | 33.33% |
| Niki vs Kuma | 3–6 | 33.33% |
| Niki vs Zafina | 3–3 | 50.00% |
| Niki vs Panda | 0–3 | 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.