| Mainless vs Jin | 21–4 | 84.00% |
| Mainless vs Dragunov | 14–11 | 56.00% |
| Mainless vs Bryan | 17–4 | 80.95% |
| Mainless vs Clive | 14–5 | 73.68% |
| Mainless vs Steve | 10–8 | 55.56% |
| Mainless vs Lidia | 5–7 | 41.67% |
| Mainless vs Heihachi | 6–6 | 50.00% |
| Mainless vs Paul | 8–3 | 72.73% |
| Mainless vs Nina | 4–6 | 40.00% |
| Mainless vs Victor | 8–2 | 80.00% |
| Mainless vs Lili | 7–2 | 77.78% |
| Mainless vs Claudio | 8–0 | 100.00% |
| Mainless vs Jun | 7–1 | 87.50% |
| Mainless vs Reina | 7–1 | 87.50% |
| Mainless vs Yoshimitsu | 3–4 | 42.86% |
| Mainless vs Hwoarang | 3–4 | 42.86% |
| Mainless vs Feng | 7–0 | 100.00% |
| Mainless vs Kuma | 5–2 | 71.43% |
| Mainless vs Azucena | 4–3 | 57.14% |
| Mainless vs Kazuya | 4–2 | 66.67% |
| Mainless vs Asuka | 1–5 | 16.67% |
| Mainless vs Lars | 4–1 | 80.00% |
| Mainless vs Shaheen | 4–1 | 80.00% |
| Mainless vs Eddy | 5–0 | 100.00% |
| Mainless vs Law | 4–0 | 100.00% |
| Mainless vs Jack-8 | 2–2 | 50.00% |
| Mainless vs Devil Jin | 4–0 | 100.00% |
| Mainless vs Leo | 2–2 | 50.00% |
| Mainless vs Zafina | 4–0 | 100.00% |
| Mainless vs Raven | 4–0 | 100.00% |
| Mainless vs Xiaoyu | 2–0 | 100.00% |
| Mainless vs Lee | 1–1 | 50.00% |
| Mainless vs Leroy | 2–0 | 100.00% |
| Mainless vs Alisa | 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.