| Halfmortal vs Jin | 42–59 | 41.58% |
| Halfmortal vs King | 33–41 | 44.59% |
| Halfmortal vs Bryan | 44–29 | 60.27% |
| Halfmortal vs Hwoarang | 27–39 | 40.91% |
| Halfmortal vs Dragunov | 35–24 | 59.32% |
| Halfmortal vs Kazuya | 27–30 | 47.37% |
| Halfmortal vs Law | 21–31 | 40.38% |
| Halfmortal vs Jun | 30–21 | 58.82% |
| Halfmortal vs Paul | 22–28 | 44.00% |
| Halfmortal vs Eddy | 22–21–1 | 51.16% |
| Halfmortal vs Xiaoyu | 25–18 | 58.14% |
| Halfmortal vs Lee | 22–20 | 52.38% |
| Halfmortal vs Victor | 15–27 | 35.71% |
| Halfmortal vs Steve | 21–17 | 55.26% |
| Halfmortal vs Reina | 11–25 | 30.56% |
| Halfmortal vs Yoshimitsu | 18–17 | 51.43% |
| Halfmortal vs Asuka | 18–9 | 66.67% |
| Halfmortal vs Devil Jin | 5–22 | 18.52% |
| Halfmortal vs Lili | 15–12 | 55.56% |
| Halfmortal vs Lars | 14–11 | 56.00% |
| Halfmortal vs Jack-8 | 8–16 | 33.33% |
| Halfmortal vs Feng | 11–13 | 45.83% |
| Halfmortal vs Nina | 10–6 | 62.50% |
| Halfmortal vs Alisa | 5–9 | 35.71% |
| Halfmortal vs Claudio | 4–10 | 28.57% |
| Halfmortal vs Kuma | 8–6 | 57.14% |
| Halfmortal vs Azucena | 4–10 | 28.57% |
| Halfmortal vs Leo | 3–4 | 42.86% |
| Halfmortal vs Raven | 4–3 | 57.14% |
| Halfmortal vs Leroy | 1–4 | 20.00% |
| Halfmortal vs Shaheen | 2–2 | 50.00% |
| Halfmortal vs Zafina | 1–3 | 25.00% |
| Halfmortal vs Panda | 0–3 | 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.