| Mashima vs Reina | 40–32 | 55.56% |
| Mashima vs Steve | 39–25 | 60.94% |
| Mashima vs Jin | 24–36 | 40.00% |
| Mashima vs King | 31–20 | 60.78% |
| Mashima vs Miary Zo | 18–23 | 43.90% |
| Mashima vs Hwoarang | 24–15 | 61.54% |
| Mashima vs Clive | 16–23 | 41.03% |
| Mashima vs Armor King | 19–18 | 51.35% |
| Mashima vs Lili | 15–21 | 41.67% |
| Mashima vs Eddy | 6–28 | 17.65% |
| Mashima vs Law | 15–18 | 45.45% |
| Mashima vs Kazuya | 14–19 | 42.42% |
| Mashima vs Azucena | 14–16 | 46.67% |
| Mashima vs Jun | 14–15 | 48.28% |
| Mashima vs Bryan | 10–16 | 38.46% |
| Mashima vs Heihachi | 12–14 | 46.15% |
| Mashima vs Asuka | 13–11 | 54.17% |
| Mashima vs Victor | 12–11 | 52.17% |
| Mashima vs Lars | 9–13 | 40.91% |
| Mashima vs Yoshimitsu | 7–14 | 33.33% |
| Mashima vs Devil Jin | 11–7 | 61.11% |
| Mashima vs Feng | 8–10 | 44.44% |
| Mashima vs Kuma | 6–12 | 33.33% |
| Mashima vs Dragunov | 10–7 | 58.82% |
| Mashima vs Paul | 7–9 | 43.75% |
| Mashima vs Xiaoyu | 8–8 | 50.00% |
| Mashima vs Lee | 7–7 | 50.00% |
| Mashima vs Raven | 6–7 | 46.15% |
| Mashima vs Fahkumram | 10–3 | 76.92% |
| Mashima vs Jack-8 | 5–7 | 41.67% |
| Mashima vs Shaheen | 6–6 | 50.00% |
| Mashima vs Alisa | 6–4 | 60.00% |
| Mashima vs Leroy | 6–3 | 66.67% |
| Mashima vs Claudio | 3–5 | 37.50% |
| Mashima vs Nina | 2–5 | 28.57% |
| Mashima vs Zafina | 5–2 | 71.43% |
| Mashima vs Lidia | 3–4 | 42.86% |
| Mashima vs Leo | 3–3 | 50.00% |
| Mashima vs Anna | 2–0 | 100.00% |
| Mashima 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.