| Halfabrain vs Reina | 45–41 | 52.33% |
| Halfabrain vs Jin | 40–45 | 47.06% |
| Halfabrain vs Hwoarang | 27–35 | 43.55% |
| Halfabrain vs Kazuya | 32–25 | 56.14% |
| Halfabrain vs Bryan | 24–32 | 42.86% |
| Halfabrain vs King | 16–31 | 34.04% |
| Halfabrain vs Dragunov | 15–26 | 36.59% |
| Halfabrain vs Law | 18–22 | 45.00% |
| Halfabrain vs Paul | 17–21 | 44.74% |
| Halfabrain vs Yoshimitsu | 15–20 | 42.86% |
| Halfabrain vs Steve | 20–10 | 66.67% |
| Halfabrain vs Lili | 13–15 | 46.43% |
| Halfabrain vs Clive | 16–12 | 57.14% |
| Halfabrain vs Heihachi | 16–11 | 59.26% |
| Halfabrain vs Jun | 11–15 | 42.31% |
| Halfabrain vs Asuka | 11–14 | 44.00% |
| Halfabrain vs Azucena | 8–16 | 33.33% |
| Halfabrain vs Eddy | 6–17 | 26.09% |
| Halfabrain vs Devil Jin | 6–16 | 27.27% |
| Halfabrain vs Victor | 15–5 | 75.00% |
| Halfabrain vs Lars | 7–12 | 36.84% |
| Halfabrain vs Claudio | 6–11 | 35.29% |
| Halfabrain vs Leroy | 7–10 | 41.18% |
| Halfabrain vs Feng | 4–12 | 25.00% |
| Halfabrain vs Lidia | 3–10 | 23.08% |
| Halfabrain vs Leo | 7–5 | 58.33% |
| Halfabrain vs Xiaoyu | 3–8 | 27.27% |
| Halfabrain vs Raven | 6–5 | 54.55% |
| Halfabrain vs Alisa | 3–7 | 30.00% |
| Halfabrain vs Nina | 6–4 | 60.00% |
| Halfabrain vs Lee | 2–7 | 22.22% |
| Halfabrain vs Zafina | 3–6 | 33.33% |
| Halfabrain vs Kuma | 1–4 | 20.00% |
| Halfabrain vs Jack-8 | 0–4 | 0.00% |
| Halfabrain vs Shaheen | 3–1 | 75.00% |
| Halfabrain vs Fahkumram | 4–0 | 100.00% |
| Halfabrain vs Anna | 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.