| Massas vs Kazuya | 96–87 | 52.46% |
| Massas vs Jin | 73–94 | 43.71% |
| Massas vs Heihachi | 77–76 | 50.33% |
| Massas vs Law | 89–58 | 60.54% |
| Massas vs Hwoarang | 79–61 | 56.43% |
| Massas vs King | 65–69 | 48.51% |
| Massas vs Bryan | 43–68 | 38.74% |
| Massas vs Steve | 49–46 | 51.58% |
| Massas vs Dragunov | 48–44 | 52.17% |
| Massas vs Paul | 56–35 | 61.54% |
| Massas vs Reina | 47–39 | 54.65% |
| Massas vs Lili | 66–19 | 77.65% |
| Massas vs Devil Jin | 44–38 | 53.66% |
| Massas vs Yoshimitsu | 45–31 | 59.21% |
| Massas vs Lee | 26–38 | 40.62% |
| Massas vs Eddy | 34–30 | 53.12% |
| Massas vs Victor | 29–32 | 47.54% |
| Massas vs Azucena | 24–34 | 41.38% |
| Massas vs Asuka | 25–30 | 45.45% |
| Massas vs Feng | 30–24 | 55.56% |
| Massas vs Xiaoyu | 32–18 | 64.00% |
| Massas vs Alisa | 29–20 | 59.18% |
| Massas vs Jun | 23–26 | 46.94% |
| Massas vs Nina | 22–25 | 46.81% |
| Massas vs Leroy | 23–24 | 48.94% |
| Massas vs Lars | 20–19–1 | 51.28% |
| Massas vs Jack-8 | 18–14 | 56.25% |
| Massas vs Raven | 13–16 | 44.83% |
| Massas vs Lidia | 6–23 | 20.69% |
| Massas vs Shaheen | 10–14 | 41.67% |
| Massas vs Leo | 9–8 | 52.94% |
| Massas vs Claudio | 4–9 | 30.77% |
| Massas vs Kuma | 8–5 | 61.54% |
| Massas vs Clive | 4–9 | 30.77% |
| Massas vs Zafina | 7–5 | 58.33% |
| Massas vs Panda | 1–7 | 12.50% |
| Massas vs Anna | 3–4 | 42.86% |
| Massas vs Fahkumram | 5–2 | 71.43% |
| Massas vs Miary Zo | 4–0 | 100.00% |
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.