| Mefisto vs Kazuya | 164–123 | 57.14% |
| Mefisto vs Jin | 149–130 | 53.41% |
| Mefisto vs Bryan | 136–121 | 52.92% |
| Mefisto vs King | 145–97 | 59.92% |
| Mefisto vs Heihachi | 108–79 | 57.75% |
| Mefisto vs Hwoarang | 97–73 | 57.06% |
| Mefisto vs Steve | 98–72 | 57.65% |
| Mefisto vs Paul | 86–82 | 51.19% |
| Mefisto vs Lee | 84–71 | 54.19% |
| Mefisto vs Law | 75–71 | 51.37% |
| Mefisto vs Reina | 69–69 | 50.00% |
| Mefisto vs Yoshimitsu | 78–57 | 57.78% |
| Mefisto vs Dragunov | 84–50 | 62.69% |
| Mefisto vs Jun | 68–56 | 54.84% |
| Mefisto vs Devil Jin | 57–64 | 47.11% |
| Mefisto vs Lili | 58–63 | 47.93% |
| Mefisto vs Fahkumram | 72–45 | 61.54% |
| Mefisto vs Asuka | 57–48 | 54.29% |
| Mefisto vs Lars | 44–51 | 46.32% |
| Mefisto vs Xiaoyu | 48–43 | 52.75% |
| Mefisto vs Feng | 69–22 | 75.82% |
| Mefisto vs Eddy | 58–33 | 63.74% |
| Mefisto vs Alisa | 44–39 | 53.01% |
| Mefisto vs Nina | 46–37 | 55.42% |
| Mefisto vs Victor | 46–32 | 58.97% |
| Mefisto vs Anna | 45–33 | 57.69% |
| Mefisto vs Leo | 40–37 | 51.95% |
| Mefisto vs Azucena | 51–24 | 68.00% |
| Mefisto vs Claudio | 37–37 | 50.00% |
| Mefisto vs Leroy | 38–36 | 51.35% |
| Mefisto vs Jack-8 | 31–35 | 46.97% |
| Mefisto vs Clive | 33–31 | 51.56% |
| Mefisto vs Zafina | 28–32 | 46.67% |
| Mefisto vs Armor King | 29–24 | 54.72% |
| Mefisto vs Lidia | 23–29 | 44.23% |
| Mefisto vs Raven | 27–19 | 58.70% |
| Mefisto vs Shaheen | 15–13 | 53.57% |
| Mefisto vs Kuma | 11–15 | 42.31% |
| Mefisto vs Panda | 12–13 | 48.00% |
| Mefisto vs Miary Zo | 3–4 | 42.86% |
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.