| Halley25 vs Reina | 9–9 | 50.00% |
| Halley25 vs King | 8–9 | 47.06% |
| Halley25 vs Kazuya | 1–12 | 7.69% |
| Halley25 vs Jin | 1–10 | 9.09% |
| Halley25 vs Bryan | 3–8 | 27.27% |
| Halley25 vs Hwoarang | 3–6 | 33.33% |
| Halley25 vs Law | 3–5 | 37.50% |
| Halley25 vs Steve | 2–6 | 25.00% |
| Halley25 vs Devil Jin | 5–3 | 62.50% |
| Halley25 vs Yoshimitsu | 0–7 | 0.00% |
| Halley25 vs Xiaoyu | 6–1 | 85.71% |
| Halley25 vs Lili | 2–5 | 28.57% |
| Halley25 vs Lee | 4–3 | 57.14% |
| Halley25 vs Jun | 2–5 | 28.57% |
| Halley25 vs Paul | 0–5 | 0.00% |
| Halley25 vs Asuka | 2–3 | 40.00% |
| Halley25 vs Dragunov | 1–4 | 20.00% |
| Halley25 vs Claudio | 3–2 | 60.00% |
| Halley25 vs Azucena | 5–0 | 100.00% |
| Halley25 vs Victor | 1–4 | 20.00% |
| Halley25 vs Clive | 2–3 | 40.00% |
| Halley25 vs Jack-8 | 0–4 | 0.00% |
| Halley25 vs Leo | 1–3 | 25.00% |
| Halley25 vs Lars | 3–1 | 75.00% |
| Halley25 vs Alisa | 2–2 | 50.00% |
| Halley25 vs Kuma | 3–1 | 75.00% |
| Halley25 vs Feng | 3–0 | 100.00% |
| Halley25 vs Nina | 2–1 | 66.67% |
| Halley25 vs Zafina | 2–1 | 66.67% |
| Halley25 vs Raven | 0–3 | 0.00% |
| Halley25 vs Eddy | 1–2 | 33.33% |
| Halley25 vs Heihachi | 0–1 | 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.