| Mastui vs King | 21–16 | 56.76% |
| Mastui vs Kazuya | 15–19 | 44.12% |
| Mastui vs Law | 14–15 | 48.28% |
| Mastui vs Jin | 8–20 | 28.57% |
| Mastui vs Reina | 11–12 | 47.83% |
| Mastui vs Hwoarang | 6–15 | 28.57% |
| Mastui vs Azucena | 13–8 | 61.90% |
| Mastui vs Jun | 9–10 | 47.37% |
| Mastui vs Steve | 11–7 | 61.11% |
| Mastui vs Dragunov | 7–11 | 38.89% |
| Mastui vs Alisa | 6–12 | 33.33% |
| Mastui vs Lidia | 4–14 | 22.22% |
| Mastui vs Asuka | 6–11 | 35.29% |
| Mastui vs Lili | 7–10 | 41.18% |
| Mastui vs Paul | 8–7 | 53.33% |
| Mastui vs Lee | 7–7 | 50.00% |
| Mastui vs Victor | 5–9 | 35.71% |
| Mastui vs Yoshimitsu | 4–9 | 30.77% |
| Mastui vs Bryan | 7–5 | 58.33% |
| Mastui vs Lars | 4–5 | 44.44% |
| Mastui vs Eddy | 0–9 | 0.00% |
| Mastui vs Jack-8 | 2–5 | 28.57% |
| Mastui vs Devil Jin | 3–4 | 42.86% |
| Mastui vs Nina | 1–6 | 14.29% |
| Mastui vs Xiaoyu | 4–2 | 66.67% |
| Mastui vs Leroy | 4–2 | 66.67% |
| Mastui vs Leo | 2–3 | 40.00% |
| Mastui vs Claudio | 2–3 | 40.00% |
| Mastui vs Zafina | 3–2 | 60.00% |
| Mastui vs Shaheen | 2–2 | 50.00% |
| Mastui vs Kuma | 1–3 | 25.00% |
| Mastui vs Feng | 3–0 | 100.00% |
| Mastui vs Raven | 2–1 | 66.67% |
| Mastui vs Panda | 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.