| Byczy vs Jin | 60–63 | 48.78% |
| Byczy vs King | 51–58 | 46.79% |
| Byczy vs Kazuya | 38–59 | 39.18% |
| Byczy vs Hwoarang | 43–35 | 55.13% |
| Byczy vs Bryan | 28–49 | 36.36% |
| Byczy vs Heihachi | 24–50 | 32.43% |
| Byczy vs Reina | 34–36 | 48.57% |
| Byczy vs Law | 29–37 | 43.94% |
| Byczy vs Steve | 27–31 | 46.55% |
| Byczy vs Yoshimitsu | 18–36 | 33.33% |
| Byczy vs Dragunov | 14–40 | 25.93% |
| Byczy vs Clive | 12–39 | 23.53% |
| Byczy vs Eddy | 20–24 | 45.45% |
| Byczy vs Jun | 16–25 | 39.02% |
| Byczy vs Alisa | 11–27 | 28.95% |
| Byczy vs Asuka | 20–17 | 54.05% |
| Byczy vs Paul | 9–27 | 25.00% |
| Byczy vs Devil Jin | 7–24 | 22.58% |
| Byczy vs Lili | 12–16 | 42.86% |
| Byczy vs Lee | 5–22 | 18.52% |
| Byczy vs Azucena | 11–16 | 40.74% |
| Byczy vs Victor | 10–14 | 41.67% |
| Byczy vs Claudio | 9–13 | 40.91% |
| Byczy vs Xiaoyu | 11–9 | 55.00% |
| Byczy vs Lidia | 10–8 | 55.56% |
| Byczy vs Feng | 6–11 | 35.29% |
| Byczy vs Leroy | 11–6 | 64.71% |
| Byczy vs Leo | 7–8 | 46.67% |
| Byczy vs Nina | 3–12 | 20.00% |
| Byczy vs Lars | 3–9 | 25.00% |
| Byczy vs Jack-8 | 3–8 | 27.27% |
| Byczy vs Kuma | 4–6 | 40.00% |
| Byczy vs Zafina | 5–5 | 50.00% |
| Byczy vs Raven | 3–5 | 37.50% |
| Byczy vs Shaheen | 1–1 | 50.00% |
| Byczy vs Panda | 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.