| Niarolf vs King | 11–13 | 45.83% |
| Niarolf vs Reina | 10–14 | 41.67% |
| Niarolf vs Jin | 2–10 | 16.67% |
| Niarolf vs Kazuya | 3–9 | 25.00% |
| Niarolf vs Dragunov | 4–6 | 40.00% |
| Niarolf vs Asuka | 5–3 | 62.50% |
| Niarolf vs Lili | 5–3 | 62.50% |
| Niarolf vs Eddy | 2–6 | 25.00% |
| Niarolf vs Clive | 4–4 | 50.00% |
| Niarolf vs Alisa | 4–3 | 57.14% |
| Niarolf vs Azucena | 3–4 | 42.86% |
| Niarolf vs Paul | 2–4 | 33.33% |
| Niarolf vs Yoshimitsu | 3–3 | 50.00% |
| Niarolf vs Bryan | 3–3 | 50.00% |
| Niarolf vs Jun | 4–2 | 66.67% |
| Niarolf vs Law | 3–2 | 60.00% |
| Niarolf vs Xiaoyu | 2–3 | 40.00% |
| Niarolf vs Leroy | 2–3 | 40.00% |
| Niarolf vs Fahkumram | 2–3 | 40.00% |
| Niarolf vs Hwoarang | 3–1 | 75.00% |
| Niarolf vs Steve | 1–3 | 25.00% |
| Niarolf vs Victor | 2–2 | 50.00% |
| Niarolf vs Heihachi | 2–2 | 50.00% |
| Niarolf vs Lars | 1–2 | 33.33% |
| Niarolf vs Shaheen | 0–3 | 0.00% |
| Niarolf vs Anna | 1–2 | 33.33% |
| Niarolf vs Feng | 1–1 | 50.00% |
| Niarolf vs Leo | 1–1 | 50.00% |
| Niarolf vs Lee | 2–0 | 100.00% |
| Niarolf vs Jack-8 | 0–1 | 0.00% |
| Niarolf vs Devil Jin | 1–0 | 100.00% |
| Niarolf vs Nina | 0–1 | 0.00% |
| Niarolf vs Kuma | 0–1 | 0.00% |
| Niarolf vs Lidia | 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.