| Mattis vs Law | 13–32 | 28.89% |
| Mattis vs Jin | 10–31 | 24.39% |
| Mattis vs Hwoarang | 12–25 | 32.43% |
| Mattis vs King | 12–24 | 33.33% |
| Mattis vs Steve | 14–22 | 38.89% |
| Mattis vs Reina | 17–14 | 54.84% |
| Mattis vs Victor | 9–21 | 30.00% |
| Mattis vs Kazuya | 12–15 | 44.44% |
| Mattis vs Devil Jin | 7–15 | 31.82% |
| Mattis vs Dragunov | 12–10 | 54.55% |
| Mattis vs Bryan | 6–15 | 28.57% |
| Mattis vs Lili | 6–13 | 31.58% |
| Mattis vs Clive | 4–15 | 21.05% |
| Mattis vs Alisa | 5–13 | 27.78% |
| Mattis vs Heihachi | 9–8 | 52.94% |
| Mattis vs Miary Zo | 5–11 | 31.25% |
| Mattis vs Claudio | 5–10 | 33.33% |
| Mattis vs Jun | 6–8 | 42.86% |
| Mattis vs Azucena | 2–12 | 14.29% |
| Mattis vs Asuka | 4–7 | 36.36% |
| Mattis vs Fahkumram | 1–10 | 9.09% |
| Mattis vs Eddy | 3–7 | 30.00% |
| Mattis vs Lars | 0–9 | 0.00% |
| Mattis vs Panda | 1–8 | 11.11% |
| Mattis vs Raven | 3–6 | 33.33% |
| Mattis vs Xiaoyu | 4–4 | 50.00% |
| Mattis vs Lee | 1–7 | 12.50% |
| Mattis vs Lidia | 1–5 | 16.67% |
| Mattis vs Jack-8 | 0–5 | 0.00% |
| Mattis vs Zafina | 3–2 | 60.00% |
| Mattis vs Armor King | 1–4 | 20.00% |
| Mattis vs Feng | 0–4 | 0.00% |
| Mattis vs Nina | 2–2 | 50.00% |
| Mattis vs Anna | 3–1 | 75.00% |
| Mattis vs Yoshimitsu | 2–1 | 66.67% |
| Mattis vs Leo | 1–2 | 33.33% |
| Mattis vs Shaheen | 0–2 | 0.00% |
| Mattis vs Kuma | 0–1 | 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.