| Mason vs Eddy | 30–25 | 54.55% |
| Mason vs King | 27–16 | 62.79% |
| Mason vs Hwoarang | 19–23 | 45.24% |
| Mason vs Azucena | 28–12 | 70.00% |
| Mason vs Reina | 24–14 | 63.16% |
| Mason vs Law | 13–24 | 35.14% |
| Mason vs Jin | 20–16 | 55.56% |
| Mason vs Kazuya | 18–16 | 52.94% |
| Mason vs Bryan | 18–15 | 54.55% |
| Mason vs Lars | 16–13 | 55.17% |
| Mason vs Jun | 12–16 | 42.86% |
| Mason vs Lili | 14–13 | 51.85% |
| Mason vs Dragunov | 13–14 | 48.15% |
| Mason vs Yoshimitsu | 9–16 | 36.00% |
| Mason vs Armor King | 12–12 | 50.00% |
| Mason vs Feng | 10–12 | 45.45% |
| Mason vs Xiaoyu | 10–11 | 47.62% |
| Mason vs Steve | 13–8 | 61.90% |
| Mason vs Victor | 14–7 | 66.67% |
| Mason vs Nina | 11–9 | 55.00% |
| Mason vs Jack-8 | 8–10 | 44.44% |
| Mason vs Paul | 7–10 | 41.18% |
| Mason vs Kuma | 9–7 | 56.25% |
| Mason vs Lee | 7–8 | 46.67% |
| Mason vs Asuka | 7–7 | 50.00% |
| Mason vs Alisa | 7–7 | 50.00% |
| Mason vs Raven | 2–10 | 16.67% |
| Mason vs Heihachi | 8–4 | 66.67% |
| Mason vs Leroy | 6–5 | 54.55% |
| Mason vs Leo | 7–3 | 70.00% |
| Mason vs Zafina | 3–5 | 37.50% |
| Mason vs Lidia | 4–4 | 50.00% |
| Mason vs Devil Jin | 5–2 | 71.43% |
| Mason vs Shaheen | 3–4 | 42.86% |
| Mason vs Panda | 5–1 | 83.33% |
| Mason vs Anna | 3–2 | 60.00% |
| Mason vs Claudio | 3–0 | 100.00% |
| Mason vs Fahkumram | 1–1 | 50.00% |
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.