| Nieves vs Jin | 171–82 | 67.59% |
| Nieves vs Bryan | 136–93 | 59.39% |
| Nieves vs King | 119–94 | 55.87% |
| Nieves vs Dragunov | 127–76 | 62.56% |
| Nieves vs Hwoarang | 111–65 | 63.07% |
| Nieves vs Kazuya | 108–59 | 64.67% |
| Nieves vs Armor King | 79–80 | 49.69% |
| Nieves vs Law | 90–63–1 | 58.82% |
| Nieves vs Lili | 85–60 | 58.62% |
| Nieves vs Reina | 87–52 | 62.59% |
| Nieves vs Yoshimitsu | 65–64 | 50.39% |
| Nieves vs Xiaoyu | 59–62 | 48.76% |
| Nieves vs Lee | 77–43 | 64.17% |
| Nieves vs Lidia | 66–53 | 55.46% |
| Nieves vs Steve | 70–46 | 60.34% |
| Nieves vs Alisa | 60–51 | 54.05% |
| Nieves vs Devil Jin | 68–39 | 63.55% |
| Nieves vs Victor | 62–43 | 59.05% |
| Nieves vs Lars | 54–49 | 52.43% |
| Nieves vs Paul | 70–30 | 70.00% |
| Nieves vs Feng | 49–44–1 | 52.69% |
| Nieves vs Nina | 68–26 | 72.34% |
| Nieves vs Eddy | 45–47 | 48.91% |
| Nieves vs Claudio | 50–39 | 56.18% |
| Nieves vs Leo | 55–31 | 63.95% |
| Nieves vs Shaheen | 40–46 | 46.51% |
| Nieves vs Leroy | 54–32 | 62.79% |
| Nieves vs Raven | 37–47 | 44.05% |
| Nieves vs Heihachi | 50–30 | 62.50% |
| Nieves vs Jun | 47–29 | 61.84% |
| Nieves vs Azucena | 39–37 | 51.32% |
| Nieves vs Zafina | 30–38 | 44.12% |
| Nieves vs Jack-8 | 25–36 | 40.98% |
| Nieves vs Fahkumram | 41–18 | 69.49% |
| Nieves vs Kuma | 21–31 | 40.38% |
| Nieves vs Asuka | 31–20 | 60.78% |
| Nieves vs Anna | 24–27 | 47.06% |
| Nieves vs Clive | 18–24 | 42.86% |
| Nieves vs Panda | 13–8 | 61.90% |
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.