| Mastantuono vs Hwoarang | 19–8 | 70.37% |
| Mastantuono vs King | 14–12 | 53.85% |
| Mastantuono vs Steve | 19–7 | 73.08% |
| Mastantuono vs Law | 10–6 | 62.50% |
| Mastantuono vs Jun | 8–6 | 57.14% |
| Mastantuono vs Dragunov | 8–5 | 61.54% |
| Mastantuono vs Reina | 7–6 | 53.85% |
| Mastantuono vs Bryan | 5–7 | 41.67% |
| Mastantuono vs Fahkumram | 9–2 | 81.82% |
| Mastantuono vs Armor King | 7–4 | 63.64% |
| Mastantuono vs Jin | 6–3 | 66.67% |
| Mastantuono vs Paul | 6–2 | 75.00% |
| Mastantuono vs Lili | 8–0 | 100.00% |
| Mastantuono vs Eddy | 4–4 | 50.00% |
| Mastantuono vs Alisa | 3–4 | 42.86% |
| Mastantuono vs Lee | 1–6 | 14.29% |
| Mastantuono vs Azucena | 5–2 | 71.43% |
| Mastantuono vs Kazuya | 4–2 | 66.67% |
| Mastantuono vs Zafina | 4–2 | 66.67% |
| Mastantuono vs Leroy | 4–2 | 66.67% |
| Mastantuono vs Heihachi | 2–4 | 33.33% |
| Mastantuono vs Asuka | 4–1 | 80.00% |
| Mastantuono vs Nina | 3–2 | 60.00% |
| Mastantuono vs Lidia | 4–1 | 80.00% |
| Mastantuono vs Clive | 5–0 | 100.00% |
| Mastantuono vs Lars | 3–1 | 75.00% |
| Mastantuono vs Leo | 0–3 | 0.00% |
| Mastantuono vs Claudio | 2–1 | 66.67% |
| Mastantuono vs Raven | 2–1 | 66.67% |
| Mastantuono vs Xiaoyu | 1–1 | 50.00% |
| Mastantuono vs Feng | 0–2 | 0.00% |
| Mastantuono vs Victor | 0–2 | 0.00% |
| Mastantuono vs Anna | 2–0 | 100.00% |
| Mastantuono vs Yoshimitsu | 0–1 | 0.00% |
| Mastantuono vs Miary Zo | 1–0 | 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.