| Nikki vs Jin | 193–156 | 55.30% |
| Nikki vs King | 168–151 | 52.66% |
| Nikki vs Hwoarang | 143–174 | 45.11% |
| Nikki vs Law | 158–148 | 51.63% |
| Nikki vs Kazuya | 160–131 | 54.98% |
| Nikki vs Bryan | 123–147 | 45.56% |
| Nikki vs Reina | 149–120 | 55.39% |
| Nikki vs Xiaoyu | 129–138 | 48.31% |
| Nikki vs Steve | 113–103 | 52.31% |
| Nikki vs Yoshimitsu | 111–91–1 | 54.95% |
| Nikki vs Lili | 87–110 | 44.16% |
| Nikki vs Dragunov | 89–102 | 46.60% |
| Nikki vs Paul | 93–88 | 51.38% |
| Nikki vs Eddy | 95–82 | 53.67% |
| Nikki vs Asuka | 93–81 | 53.45% |
| Nikki vs Azucena | 96–78 | 55.17% |
| Nikki vs Lee | 84–70 | 54.55% |
| Nikki vs Lars | 77–71 | 52.03% |
| Nikki vs Nina | 74–72 | 50.68% |
| Nikki vs Jun | 62–82 | 43.06% |
| Nikki vs Feng | 62–62 | 50.00% |
| Nikki vs Alisa | 43–80 | 34.96% |
| Nikki vs Victor | 62–55 | 52.99% |
| Nikki vs Devil Jin | 63–47 | 57.27% |
| Nikki vs Leroy | 57–48 | 54.29% |
| Nikki vs Jack-8 | 43–46–1 | 48.31% |
| Nikki vs Leo | 40–49 | 44.94% |
| Nikki vs Raven | 43–45 | 48.86% |
| Nikki vs Zafina | 35–32 | 52.24% |
| Nikki vs Lidia | 33–30 | 52.38% |
| Nikki vs Heihachi | 29–31 | 48.33% |
| Nikki vs Kuma | 26–31 | 45.61% |
| Nikki vs Claudio | 23–28 | 45.10% |
| Nikki vs Shaheen | 13–21 | 38.24% |
| Nikki vs Anna | 8–12 | 40.00% |
| Nikki vs Armor King | 10–6 | 62.50% |
| Nikki vs Panda | 10–5 | 66.67% |
| Nikki vs Miary Zo | 3–8 | 27.27% |
| Nikki vs Fahkumram | 2–4 | 33.33% |
| Nikki vs Clive | 4–1 | 80.00% |
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.