| Mattyboy vs King | 71–42 | 62.83% |
| Mattyboy vs Heihachi | 59–44 | 57.28% |
| Mattyboy vs Bryan | 39–50 | 43.82% |
| Mattyboy vs Jin | 50–37 | 57.47% |
| Mattyboy vs Steve | 47–31 | 60.26% |
| Mattyboy vs Kazuya | 45–31 | 59.21% |
| Mattyboy vs Yoshimitsu | 30–44 | 40.54% |
| Mattyboy vs Devil Jin | 43–27 | 61.43% |
| Mattyboy vs Paul | 29–31 | 48.33% |
| Mattyboy vs Reina | 26–34 | 43.33% |
| Mattyboy vs Hwoarang | 38–20 | 65.52% |
| Mattyboy vs Lili | 21–37 | 36.21% |
| Mattyboy vs Law | 27–28 | 49.09% |
| Mattyboy vs Dragunov | 34–16 | 68.00% |
| Mattyboy vs Lee | 21–27 | 43.75% |
| Mattyboy vs Claudio | 14–21 | 40.00% |
| Mattyboy vs Shaheen | 19–15 | 55.88% |
| Mattyboy vs Lars | 17–16 | 51.52% |
| Mattyboy vs Feng | 13–19 | 40.62% |
| Mattyboy vs Asuka | 20–11 | 64.52% |
| Mattyboy vs Alisa | 11–20 | 35.48% |
| Mattyboy vs Jun | 15–14 | 51.72% |
| Mattyboy vs Jack-8 | 13–15 | 46.43% |
| Mattyboy vs Nina | 13–13 | 50.00% |
| Mattyboy vs Azucena | 14–12 | 53.85% |
| Mattyboy vs Eddy | 11–15 | 42.31% |
| Mattyboy vs Xiaoyu | 16–9 | 64.00% |
| Mattyboy vs Leo | 11–12 | 47.83% |
| Mattyboy vs Zafina | 7–11 | 38.89% |
| Mattyboy vs Leroy | 8–8 | 50.00% |
| Mattyboy vs Lidia | 9–7 | 56.25% |
| Mattyboy vs Raven | 2–12 | 14.29% |
| Mattyboy vs Victor | 5–8 | 38.46% |
| Mattyboy vs Kuma | 1–7 | 12.50% |
| Mattyboy vs Panda | 4–4 | 50.00% |
| Mattyboy vs Clive | 2–1 | 66.67% |
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.