| Mattis vs King | 20–32 | 38.46% |
| Mattis vs Hwoarang | 14–32 | 30.43% |
| Mattis vs Law | 13–32 | 28.89% |
| Mattis vs Steve | 16–27 | 37.21% |
| Mattis vs Jin | 10–31 | 24.39% |
| Mattis vs Kazuya | 19–22 | 46.34% |
| Mattis vs Reina | 24–17 | 58.54% |
| Mattis vs Dragunov | 13–18 | 41.94% |
| Mattis vs Victor | 9–21 | 30.00% |
| Mattis vs Alisa | 9–20 | 31.03% |
| Mattis vs Azucena | 8–19 | 29.63% |
| Mattis vs Bryan | 7–17 | 29.17% |
| Mattis vs Lili | 6–17 | 26.09% |
| Mattis vs Devil Jin | 7–15 | 31.82% |
| Mattis vs Jun | 8–14 | 36.36% |
| Mattis vs Heihachi | 11–11 | 50.00% |
| Mattis vs Clive | 4–15 | 21.05% |
| Mattis vs Miary Zo | 5–13 | 27.78% |
| Mattis vs Xiaoyu | 7–9 | 43.75% |
| Mattis vs Lars | 2–14 | 12.50% |
| Mattis vs Claudio | 5–10 | 33.33% |
| Mattis vs Armor King | 5–10 | 33.33% |
| Mattis vs Asuka | 6–8 | 42.86% |
| Mattis vs Eddy | 4–10 | 28.57% |
| Mattis vs Fahkumram | 2–12 | 14.29% |
| Mattis vs Raven | 4–8 | 33.33% |
| Mattis vs Lee | 4–7 | 36.36% |
| Mattis vs Panda | 1–8 | 11.11% |
| Mattis vs Yoshimitsu | 5–3 | 62.50% |
| Mattis vs Zafina | 4–4 | 50.00% |
| Mattis vs Leo | 2–4 | 33.33% |
| Mattis vs Nina | 2–4 | 33.33% |
| Mattis vs Lidia | 1–5 | 16.67% |
| Mattis vs Paul | 1–4 | 20.00% |
| Mattis vs Jack-8 | 0–5 | 0.00% |
| Mattis vs Feng | 1–4 | 20.00% |
| Mattis vs Anna | 3–1 | 75.00% |
| Mattis vs Kuma | 0–3 | 0.00% |
| Mattis vs Shaheen | 0–2 | 0.00% |
| Mattis vs Leroy | 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.