| Mattah vs Reina | 43–47 | 47.78% |
| Mattah vs Jin | 36–45 | 44.44% |
| Mattah vs King | 27–51 | 34.62% |
| Mattah vs Kazuya | 33–43 | 43.42% |
| Mattah vs Bryan | 21–39 | 35.00% |
| Mattah vs Hwoarang | 17–37 | 31.48% |
| Mattah vs Yoshimitsu | 19–34 | 35.85% |
| Mattah vs Azucena | 18–31 | 36.73% |
| Mattah vs Law | 7–41 | 14.58% |
| Mattah vs Eddy | 12–29 | 29.27% |
| Mattah vs Lili | 13–26 | 33.33% |
| Mattah vs Jun | 16–23 | 41.03% |
| Mattah vs Dragunov | 6–27 | 18.18% |
| Mattah vs Victor | 14–19 | 42.42% |
| Mattah vs Paul | 9–23 | 28.12% |
| Mattah vs Steve | 14–17 | 45.16% |
| Mattah vs Lee | 9–21 | 30.00% |
| Mattah vs Lars | 11–18 | 37.93% |
| Mattah vs Asuka | 11–16 | 40.74% |
| Mattah vs Devil Jin | 9–16 | 36.00% |
| Mattah vs Nina | 9–13 | 40.91% |
| Mattah vs Leroy | 4–16 | 20.00% |
| Mattah vs Xiaoyu | 5–14 | 26.32% |
| Mattah vs Claudio | 3–14 | 17.65% |
| Mattah vs Kuma | 7–10 | 41.18% |
| Mattah vs Feng | 6–10 | 37.50% |
| Mattah vs Jack-8 | 4–11 | 26.67% |
| Mattah vs Shaheen | 4–10 | 28.57% |
| Mattah vs Leo | 9–3 | 75.00% |
| Mattah vs Alisa | 4–8 | 33.33% |
| Mattah vs Raven | 9–1 | 90.00% |
| Mattah vs Panda | 1–4 | 20.00% |
| Mattah vs Zafina | 0–2 | 0.00% |
| Mattah vs Heihachi | 0–2 | 0.00% |
| Mattah vs Clive | 2–0 | 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.