| Mainichi vs Dragunov | 64–69 | 48.12% |
| Mainichi vs Paul | 62–63 | 49.60% |
| Mainichi vs Kazuya | 69–54 | 56.10% |
| Mainichi vs Reina | 49–48 | 50.52% |
| Mainichi vs Bryan | 41–48 | 46.07% |
| Mainichi vs Jin | 38–43 | 46.91% |
| Mainichi vs King | 39–41 | 48.75% |
| Mainichi vs Hwoarang | 46–22 | 67.65% |
| Mainichi vs Azucena | 30–34 | 46.88% |
| Mainichi vs Steve | 32–31 | 50.79% |
| Mainichi vs Yoshimitsu | 32–27 | 54.24% |
| Mainichi vs Victor | 24–31 | 43.64% |
| Mainichi vs Lili | 26–24 | 52.00% |
| Mainichi vs Devil Jin | 23–25 | 47.92% |
| Mainichi vs Asuka | 16–29 | 35.56% |
| Mainichi vs Leo | 24–15 | 61.54% |
| Mainichi vs Feng | 9–28 | 24.32% |
| Mainichi vs Nina | 16–21 | 43.24% |
| Mainichi vs Law | 17–18 | 48.57% |
| Mainichi vs Lee | 14–21 | 40.00% |
| Mainichi vs Leroy | 21–13 | 61.76% |
| Mainichi vs Jack-8 | 14–19 | 42.42% |
| Mainichi vs Jun | 17–12 | 58.62% |
| Mainichi vs Claudio | 15–13 | 53.57% |
| Mainichi vs Heihachi | 12–16 | 42.86% |
| Mainichi vs Alisa | 10–17 | 37.04% |
| Mainichi vs Lars | 10–11 | 47.62% |
| Mainichi vs Kuma | 10–9 | 52.63% |
| Mainichi vs Shaheen | 10–8 | 55.56% |
| Mainichi vs Eddy | 3–14 | 17.65% |
| Mainichi vs Raven | 7–8 | 46.67% |
| Mainichi vs Clive | 3–12 | 20.00% |
| Mainichi vs Xiaoyu | 3–11 | 21.43% |
| Mainichi vs Anna | 7–6 | 53.85% |
| Mainichi vs Lidia | 3–3 | 50.00% |
| Mainichi vs Panda | 0–2 | 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.