| Mellow vs Jin | 25–14 | 64.10% |
| Mellow vs Kazuya | 21–16 | 56.76% |
| Mellow vs King | 9–23 | 28.12% |
| Mellow vs Lili | 16–15 | 51.61% |
| Mellow vs Dragunov | 12–12 | 50.00% |
| Mellow vs Steve | 12–10 | 54.55% |
| Mellow vs Jun | 10–9 | 52.63% |
| Mellow vs Reina | 9–10 | 47.37% |
| Mellow vs Lidia | 9–5 | 64.29% |
| Mellow vs Law | 3–10 | 23.08% |
| Mellow vs Leo | 8–5 | 61.54% |
| Mellow vs Alisa | 7–5 | 58.33% |
| Mellow vs Paul | 4–7 | 36.36% |
| Mellow vs Victor | 8–2 | 80.00% |
| Mellow vs Shaheen | 6–3 | 66.67% |
| Mellow vs Heihachi | 7–2 | 77.78% |
| Mellow vs Hwoarang | 4–4 | 50.00% |
| Mellow vs Bryan | 4–4 | 50.00% |
| Mellow vs Jack-8 | 1–7 | 12.50% |
| Mellow vs Devil Jin | 3–5 | 37.50% |
| Mellow vs Yoshimitsu | 4–3 | 57.14% |
| Mellow vs Asuka | 4–3 | 57.14% |
| Mellow vs Eddy | 3–4 | 42.86% |
| Mellow vs Lee | 1–5 | 16.67% |
| Mellow vs Claudio | 1–3 | 25.00% |
| Mellow vs Zafina | 0–4 | 0.00% |
| Mellow vs Nina | 1–2 | 33.33% |
| Mellow vs Leroy | 1–2 | 33.33% |
| Mellow vs Raven | 1–2 | 33.33% |
| Mellow vs Xiaoyu | 1–1 | 50.00% |
| Mellow vs Lars | 1–1 | 50.00% |
| Mellow vs Kuma | 2–0 | 100.00% |
| Mellow vs Azucena | 0–2 | 0.00% |
| Mellow vs Feng | 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.