| vieira vs Reina | 48–21 | 69.57% |
| vieira vs Steve | 31–33 | 48.44% |
| vieira vs Jin | 18–33 | 35.29% |
| vieira vs King | 24–26 | 48.00% |
| vieira vs Bryan | 19–18 | 51.35% |
| vieira vs Kazuya | 14–21 | 40.00% |
| vieira vs Law | 20–14 | 58.82% |
| vieira vs Eddy | 17–16 | 51.52% |
| vieira vs Dragunov | 14–18 | 43.75% |
| vieira vs Heihachi | 17–12 | 58.62% |
| vieira vs Asuka | 8–17 | 32.00% |
| vieira vs Lili | 12–12 | 50.00% |
| vieira vs Hwoarang | 5–17 | 22.73% |
| vieira vs Lidia | 12–10 | 54.55% |
| vieira vs Azucena | 12–8 | 60.00% |
| vieira vs Nina | 10–9 | 52.63% |
| vieira vs Jack-8 | 8–9 | 47.06% |
| vieira vs Jun | 10–6 | 62.50% |
| vieira vs Clive | 10–5 | 66.67% |
| vieira vs Claudio | 12–2 | 85.71% |
| vieira vs Victor | 7–7 | 50.00% |
| vieira vs Leo | 8–5 | 61.54% |
| vieira vs Raven | 5–6 | 45.45% |
| vieira vs Lee | 7–3 | 70.00% |
| vieira vs Xiaoyu | 6–3 | 66.67% |
| vieira vs Devil Jin | 5–4 | 55.56% |
| vieira vs Paul | 2–3 | 40.00% |
| vieira vs Yoshimitsu | 2–3 | 40.00% |
| vieira vs Kuma | 2–3 | 40.00% |
| vieira vs Zafina | 4–1 | 80.00% |
| vieira vs Feng | 2–2 | 50.00% |
| vieira vs Leroy | 1–3 | 25.00% |
| vieira vs Lars | 1–2 | 33.33% |
| vieira vs Alisa | 1–2 | 33.33% |
| vieira vs Panda | 2–1 | 66.67% |
| vieira vs Shaheen | 0–2 | 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.