| BlackMephisto vs Reina | 12–14 | 46.15% |
| BlackMephisto vs Jun | 6–9 | 40.00% |
| BlackMephisto vs Jin | 6–6 | 50.00% |
| BlackMephisto vs Devil Jin | 3–8 | 27.27% |
| BlackMephisto vs Eddy | 3–8 | 27.27% |
| BlackMephisto vs King | 6–4 | 60.00% |
| BlackMephisto vs Hwoarang | 7–3 | 70.00% |
| BlackMephisto vs Azucena | 6–4 | 60.00% |
| BlackMephisto vs Kazuya | 6–3 | 66.67% |
| BlackMephisto vs Lili | 5–4 | 55.56% |
| BlackMephisto vs Asuka | 5–3 | 62.50% |
| BlackMephisto vs Law | 4–3 | 57.14% |
| BlackMephisto vs Steve | 4–3 | 57.14% |
| BlackMephisto vs Leo | 3–3 | 50.00% |
| BlackMephisto vs Lars | 2–4 | 33.33% |
| BlackMephisto vs Lee | 2–4 | 33.33% |
| BlackMephisto vs Leroy | 4–2 | 66.67% |
| BlackMephisto vs Paul | 1–3 | 25.00% |
| BlackMephisto vs Alisa | 2–2 | 50.00% |
| BlackMephisto vs Claudio | 0–4 | 0.00% |
| BlackMephisto vs Zafina | 2–2 | 50.00% |
| BlackMephisto vs Yoshimitsu | 0–3 | 0.00% |
| BlackMephisto vs Bryan | 1–2 | 33.33% |
| BlackMephisto vs Nina | 0–3 | 0.00% |
| BlackMephisto vs Victor | 1–2 | 33.33% |
| BlackMephisto vs Raven | 1–2 | 33.33% |
| BlackMephisto vs Xiaoyu | 0–2 | 0.00% |
| BlackMephisto vs Kuma | 0–2 | 0.00% |
| BlackMephisto vs Feng | 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.