| Mournful vs Hwoarang | 32–28 | 53.33% |
| Mournful vs King | 29–30 | 49.15% |
| Mournful vs Jin | 31–25 | 55.36% |
| Mournful vs Bryan | 32–16 | 66.67% |
| Mournful vs Steve | 30–18 | 62.50% |
| Mournful vs Law | 21–25 | 45.65% |
| Mournful vs Kazuya | 27–18 | 60.00% |
| Mournful vs Eddy | 15–14 | 51.72% |
| Mournful vs Reina | 19–8 | 70.37% |
| Mournful vs Heihachi | 11–14 | 44.00% |
| Mournful vs Yoshimitsu | 9–15 | 37.50% |
| Mournful vs Paul | 12–11 | 52.17% |
| Mournful vs Dragunov | 7–15 | 31.82% |
| Mournful vs Armor King | 13–7 | 65.00% |
| Mournful vs Devil Jin | 10–8 | 55.56% |
| Mournful vs Nina | 9–9 | 50.00% |
| Mournful vs Clive | 7–11 | 38.89% |
| Mournful vs Lars | 10–7 | 58.82% |
| Mournful vs Lidia | 13–4 | 76.47% |
| Mournful vs Victor | 9–6 | 60.00% |
| Mournful vs Feng | 7–7 | 50.00% |
| Mournful vs Claudio | 7–7 | 50.00% |
| Mournful vs Azucena | 8–6 | 57.14% |
| Mournful vs Lili | 7–6 | 53.85% |
| Mournful vs Jun | 5–8 | 38.46% |
| Mournful vs Xiaoyu | 6–4 | 60.00% |
| Mournful vs Lee | 5–5 | 50.00% |
| Mournful vs Leroy | 2–8 | 20.00% |
| Mournful vs Jack-8 | 3–4 | 42.86% |
| Mournful vs Asuka | 2–5 | 28.57% |
| Mournful vs Alisa | 2–4 | 33.33% |
| Mournful vs Shaheen | 4–2 | 66.67% |
| Mournful vs Zafina | 5–0 | 100.00% |
| Mournful vs Raven | 3–2 | 60.00% |
| Mournful vs Anna | 4–1 | 80.00% |
| Mournful vs Fahkumram | 3–2 | 60.00% |
| Mournful vs Miary Zo | 3–2 | 60.00% |
| Mournful vs Kuma | 0–4 | 0.00% |
| Mournful vs Leo | 1–1 | 50.00% |
| Mournful vs Panda | 2–0 | 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.